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OVERTURE PLA Filament

Premium quality. OVERTURE is known for incredibly consistent diameter control (±0.03mm) and smooth finish. If you need reliability for important prints, this is worth the extra $6.

Pros: Consistent quality, smooth surface, minimal stringing
Cons: Higher price point
Best for: Final parts, gifts, detailed models

$19.99

Also Consider:

ELEGOO PLA ($16.99) - B0D421Q2Q2 - Vibrant colors, good middle-ground option
eSUN PLA ($17.99) - B0CS2XHNKL - Reliable basic PLA from a trusted brand

PLA+ (Enhanced Strength)

PLA+ offers significantly better layer adhesion and impact resistance compared to standard PLA, making it ideal for functional parts that need more durability.

eSUN PLA+ Filament

The industry standard. eSUN’s PLA+ is the original and still one of the best. Prints like PLA but with 3-4x the impact strength. Perfect bridge between ease-of-use and functionality.

Pros: Excellent toughness, minimal warping, easy to print
Cons: Slightly higher printing temperature
Best for: Functional parts, tools, fixtures

$20.99

Budget Alternative:

LANDU PLA+ ($17.99) - B0D69RV8W1 - Cost-effective with excellent strength

Specialty PLA

Silk PLA (Metallic Finish)

SUNLU 3D Printer Silk Filament

Beautiful silk finish with metallic sheen. Perfect for decorative items, jewelry, and artistic prints. The copper and gold colors are especially stunning.

Tip: Print slowly (40-50mm/s) for best surface finish.

$19.99

Wood-Fill PLA

Creality Wood Filament PLA

Natural wood fiber composite with authentic wood texture. Can be sanded and stained like real wood. Great for decorative items, models, and artistic projects.

Tip: Vary temperature (190-220°C) during print to create wood grain effect.

$19.99

Carbon Fiber PLA

ELEGOO Carbon Fiber PLA Filament

Carbon fiber reinforced PLA for enhanced rigidity. Excellent dimensional stability and a premium matte finish. Warning: Use hardened steel nozzle to prevent wear.

Best for: Drone parts, RC car components, rigid structures

$24.99

Glow in the Dark PLA

AMOLEN Glow in The Dark PLA Filament

Luminous PLA that glows in the dark after light exposure. Fun for kids’ projects, decorations, and practical items like light switch covers.

Tip: “Charge” with UV light or bright LED for strongest glow.

$21.99

PETG Filaments

PETG combines the ease of PLA with the strength of ABS. It’s my top choice for functional parts that need durability without requiring an enclosure.

OVERTURE PETG 3D Printer Filament

Best all-around PETG. OVERTURE’s PETG offers excellent layer adhesion, minimal warping, and good chemical resistance. Perfect for mechanical parts, containers, and outdoor items.

Print Settings: 235-245°C hotend, 70-80°C bed
Pros: Strong, flexible, chemical resistant
Cons: Can be stringy (use retraction tuning)
Best for: Mechanical parts, containers, outdoor items

$21.99

Budget Options:

SUNLU PETG ($18.99) - B0DJS3PJVX - Reliable quality at best price
Creality PETG ($19.99) - B0C8NP63GD - Strong and flexible

ABS & ASA Filaments

For parts requiring heat resistance and durability, ABS and ASA are your go-to materials. Requires enclosure to prevent warping.

ABS (Acrylonitrile Butadiene Styrene)

Polymaker ABS Filament

Premium ABS with minimal warping. Polymaker’s formula is easier to print than standard ABS and produces less odor. Excellent for automotive parts and functional components.

Print Settings: 240-250°C hotend, 100-110°C bed, requires enclosure
Best for: Automotive parts, tools, high-temp applications

$29.99

ASA (UV-Resistant Alternative to ABS)

Polymaker ASA Filament

Best for outdoor use. ASA has excellent UV resistance (won’t fade or degrade in sunlight) while maintaining ABS’s strength and heat resistance. Perfect for outdoor fixtures, signs, and garden items.

Why ASA > ABS for outdoors: Won’t yellow or become brittle from UV exposure
Best for: Outdoor fixtures, automotive trim, signage

$29.99

TPU Flexible Filaments

Flexible filaments open up entirely new applications. Print phone cases, seals, gaskets, and flexible parts.

OVERTURE TPU Filament (95A)

Best TPU for beginners. 95A hardness offers good balance between flexibility and printability. Works on most direct drive printers without modifications.

Print Settings: 220-230°C, slow speed (20-30mm/s), direct drive recommended
Pros: Excellent elasticity, durable, abrasion resistant
Best for: Phone cases, gaskets, bumpers, wearables

$23.99

More Flexible Option:

OVERTURE TPU 85A ($29.99) - B0CYPGVK4D - Ultra-flexible for specialized applications

Nylon Filaments

Engineering-grade material with excellent mechanical properties. Hygroscopic - requires dry box or dryer.

OVERTURE Nylon Filament

Strong and flexible nylon for mechanical parts. Excellent wear resistance and low friction coefficient make it perfect for gears, bushings, and living hinges.

Print Settings: 250-270°C hotend, 70-80°C bed, must keep dry
Best for: Gears, bushings, mechanical parts, living hinges

$27.99

Carbon Fiber Nylon (Maximum Strength)

Polymaker Fiberon PA612-CF Carbon Fiber Nylon

Industrial-grade material for demanding applications. CF-reinforced nylon offers incredible stiffness and dimensional stability. Requires hardened steel nozzle.

Best for: Drone frames, RC parts, tooling, jigs and fixtures

$69.99

Specialty Materials

High-Temperature PLA (HT-PLA)

Polymaker HT-PLA-GF Filament

Heat-stabilized PLA+ with enhanced temperature resistance. Can withstand temps up to 90°C after annealing. Prints like PLA but performs like engineering plastic.

Process: Print normally, then anneal at 100°C for 1 hour in oven
Best for: Functional parts, automotive, under-hood applications

$25.49

Polycarbonate (Maximum Impact Resistance)

Polymaker Polycarbonate Filament

Virtually unbreakable. PC is used for bulletproof glass and riot shields. Excellent for protective cases, safety equipment, and impact-resistant parts.

Print Settings: 270-290°C, 100-120°C bed, enclosed printer required
Best for: Protective cases, safety equipment, high-impact applications

$39.99

Support Materials

For complex prints with overhangs, water-soluble supports make post-processing effortless.

SUNLU PVA Filament

Best water-soluble support. PVA dissolves completely in water, leaving perfect surface finish. Essential for dual-extrusion printers printing complex geometries.

Usage: Print PVA as support, soak in water 12-24 hours, supports dissolve completely
Compatible with: PLA, PETG (at lower temps)
Storage: Keep sealed with desiccant - extremely hygroscopic

$32.99

Alternative:

Polymaker PVA ($34.99) - B09KL8WBRY - Premium quality for critical prints

Essential Accessories

Filament Dryer (Critical for Nylon, PETG, PVA)

Creality Official Filament Dryer Box

Efficient filament dryer with adjustable temperature. Essential for hygroscopic materials like Nylon, PETG, and PVA. Prevents moisture-related print issues.

Why you need this: Moisture in filament causes:

Bubbling and popping during extrusion
Poor layer adhesion
Stringing and oozing
Brittle prints

$39.99

Filament Selection Guide

Choose by Application:

Decorative / Display:

Standard PLA - Best value
Silk PLA - Metallic sheen
Wood PLA - Natural texture

Functional Parts (Indoor):

PLA+ - Good strength, easy to print
PETG - Better impact resistance
Nylon - Maximum durability

Functional Parts (Outdoor):

ASA - UV resistant, weatherproof
PETG - Good all-around choice

Flexible / Elastic:

TPU 95A - Phone cases, bumpers
TPU 85A - Ultra-flexible applications

Heat Resistance:

ABS - Up to 100°C
ASA - Up to 100°C + UV stable
Nylon - Up to 120°C
HT-PLA (annealed) - Up to 90°C
Polycarbonate - Up to 140°C

Engineering / High-Strength:

Nylon - Mechanical parts
Nylon CF - Maximum stiffness
PC - Impact resistance
PETG CF - Engineering parts

Printing Tips by Material

PLA / PLA+

Temperature: 200-220°C (hotend), 50-60°C (bed optional)
Speed: 50-80mm/s
Cooling: 100%
Easy: Best for beginners

PETG

Temperature: 235-245°C (hotend), 70-80°C (bed)
Speed: 40-60mm/s
Cooling: 0-50% (less is better)
Tip: Use glue stick on bed for easy removal

ABS / ASA

Temperature: 240-250°C (hotend), 100-110°C (bed)
Speed: 40-60mm/s
Cooling: 0-20%
Required: Enclosed printer, ventilation
Tip: Draft shield helps prevent warping

Nylon

Temperature: 250-270°C (hotend), 70-80°C (bed)
Speed: 30-50mm/s
Cooling: 0-30%
Critical: Must store in dry box, dry before printing

TPU

Temperature: 220-230°C (hotend), 40-60°C (bed)
Speed: 20-30mm/s (slow!)
Cooling: 0-50%
Recommended: Direct drive extruder

Storage & Maintenance

Keep Filament Dry:

Store in sealed bags with desiccant
Use filament dry box for hygroscopic materials (Nylon, PETG, PVA)
Dry before printing if absorbed moisture

Signs of Wet Filament:

Popping/crackling sounds during extrusion
Excessive stringing
Poor layer adhesion
Brittle prints

Drying Guide:

PLA: 45-50°C for 4-6 hours
PETG: 60-65°C for 4-6 hours
Nylon: 70-80°C for 8-12 hours
PVA: 45-50°C for 4 hours

Frequently Asked Questions

Q: What’s the best filament for beginners?
A: Standard PLA. It’s affordable, easy to print, and doesn’t require a heated bed. Start with SUNLU PLA ($13.99) for best value.

Q: Can I print PETG without an enclosure?
A: Yes! PETG prints well without enclosure, unlike ABS/ASA. Just use 70-80°C bed temp and minimal cooling.

Q: Do I need a special nozzle for carbon fiber filaments?
A: Yes, hardened steel nozzle is essential. Brass will wear out quickly from abrasive CF particles.

Q: How long does filament last in storage?
A: PLA/PLA+: 1-2 years if kept dry. PETG/Nylon: 6-12 months. Always use desiccant in storage.

Q: Why is my nylon print brittle?
A: Most likely moisture absorption. Dry your nylon for 8-12 hours at 70-80°C before printing.

Q: Can I mix brands/materials?
A: Yes for same material type (different PLA brands work fine together). No for different materials in same print without proper interface settings.

Conclusion

Choosing the right filament depends on your specific application:

Just starting out? SUNLU PLA ($13.99)
Need strength? eSUN PLA+ ($20.99)
Functional parts? OVERTURE PETG ($21.99)
Outdoor use? Polymaker ASA ($29.99)
Flexible parts? OVERTURE TPU ($23.99)
Engineering? Nylon or Nylon CF

Remember: The “best” filament is the one that meets your specific needs at the right price point. Don’t overspend on engineering materials for decorative prints, but don’t compromise on quality for functional parts.

Have questions about which filament is right for your project? Drop a comment below and I’ll help you choose!

This post contains affiliate links. As an Amazon Associate, I earn from qualifying purchases at no cost to you. All recommendations are based on personal testing and experience.

M3DP 3D Print Cost Calculator

Nov 9, 2025

Wilson M

Maintainer

If you’ve ever thought about selling your 3D prints, one of the first and biggest hurdles is figuring out how to price them accurately. Most people just look at the material and electricity costs, but that’s a quick way to lose money.

I recently read an article called “Refined Cost Calculation Framework for FDM Parts,” which breaks down the entire cost process into much greater detail. It factors in everything:

Machine costs and energy
Tooling costs (like nozzle wear and build sheet lifespan)
Material and model costs
Labor costs (for setup, slicing, and post-processing)

This model is far more accurate, but the one major problem is that with so many inputs, it’s incredibly hard to keep it all straight.

I started building a spreadsheet to manage this for myself, and… well, it turned into a full-blown web tool.

Introducing the M3DP 3D Print Cost Calculator

I’ve created a 3D Print Cost Calculator that’s now live on my website. You can find it under the “M3DP Tools” menu item.

This tool is designed to help you capture all those hidden costs and generate a detailed quote, which you can save for your own records or print as a PDF to send to a customer.

In it, you can dial in specific parameters for:

Labor: Set your own hourly rate for slicing, machine setup, and post-processing.
Machine: Input your machine’s cost and estimated lifespan in hours.
Components: Add costs and lifespans for your nozzle and build plate (I found research suggesting a PEI sheet can last 5,000+ hours!).
Failure Rate: Add a percentage to help cover the cost of failed prints.
Markup: Add a final markup to the total calculated value.

One of the most important features: everything is saved 100% client-side. It all stays on your machine; nothing is saved to my server. You can even save and load different setting profiles.

Watch the Full Walkthrough

I put together a video walking through the entire calculator, using a real-world part as an example. I show you where to find the tool, how to pull the data from your slicer, and how to fill out every field.

Watch the full video on YouTube: https://youtu.be/nA_-z5UbBJY

I Need Your Feedback!

This tool is brand new, and I’m still testing it and adding features.

Please check it out, give it a try, and let me know what you think. If you see any errors, have suggestions for new features, or think of any costs that I’m not currently capturing, please let me know in the video comments or contact me through the site.

Hopefully, this helps you price your prints more accurately and professionally. I look forward to hearing what you think!

References

The methodology for this calculator was based on the concepts presented in the following research, which is also referenced within the tool itself:

Primary Article: Refined Cost Calculation Framework for FDM Parts
Component Research: The tool also incorporates research findings for the average lifespan of components like nozzles and build plates.

OrcaSlicer 2.3.1 Alpha Just Dropped & How to Use the New Flow Rate Calibration

Aug 24, 2025

Wilson M

Maintainer

Mastering Extrusion: A Deep Dive into OrcaSlicer’s New Archimedean Flow Calibration

From Subjective Guesswork to Visual Precision: A Step-by-Step Guide to Perfecting Your Flow Rate with the OrcaSlicer 2.3.1 Alpha Feature

The Next Evolution in Slicing: Introducing OrcaSlicer 2.3.1 Alpha

The Relentless Pursuit of Perfection

If you’re like me, you’re constantly on the lookout for the latest and greatest features to elevate your 3D prints from good to flawless.1 This relentless pursuit of perfection is the lifeblood of the 3D printing community, and it’s a spirit embodied by the team behind OrcaSlicer. More than just a piece of software, OrcaSlicer has established itself as a dynamic, open-source project at the vanguard of Fused Deposition Modeling (FDM) technology.2 It’s a slicer built by and for the community, characterized by a rapid development cycle that consistently delivers powerful, cutting-edge tools into our hands.

It is in this spirit of continuous innovation that the developers have released OrcaSlicer version 2.3.1 Alpha.1 This isn’t just a minor update; it’s a significant leap forward, offering an exciting glimpse into the future of slicing. This release is packed with enhancements that promise to refine our workflows and improve our print quality in tangible ways.

A Glimpse of the Future: What’s New in Version 2.3.1 Alpha?

The 2.3.1 Alpha release is a treasure trove of new functionalities that address various aspects of the printing process. While this guide will focus on one revolutionary feature, it’s worth taking a moment to appreciate the breadth of improvements included in this update.1 The key additions are:

A new sparse infill rotation system for stronger, more efficient internal structures.
Substantial changes and improvements to the fuzzy skin feature, offering more creative control over surface textures.
Integrated input shaping calibration for printers running Klipper firmware.
A new junction deviation calibration test for users with Marlin-based machines.
And, the focus of our deep dive today, a completely redesigned and more intuitive method for flow rate calibration.1

Each of these features deserves its own detailed exploration, and I plan to cover them in future articles and videos. However, the new flow calibration method represents such a fundamental shift in approach and offers such a significant improvement in accuracy and ease of use that it warrants a dedicated, comprehensive guide. My goal here is to provide a focused, exhaustive walkthrough that will empower you to master this new tool immediately, without wasting your time.1

Multimedia Integration: Watch the Guide in Action

For those who prefer a visual demonstration, I have created a complete video walkthrough that complements this written guide. You can watch it to see the entire process in action, from launching the test in OrcaSlicer to analyzing the physical prints.

The Philosophy of Alpha Releases in Open Source

Before we dive into the technical details, it’s important to understand the context of an “Alpha” release. In the world of open-source software, an alpha version is far more than just an early, potentially unstable preview. It represents a philosophical choice that lies at the heart of community-driven development.2 Unlike the closed, internal testing of proprietary software, a public alpha is a transparent invitation for the most engaged users to become active participants in the development process.

The OrcaSlicer project thrives on this collaborative model, offering not just stable releases but also “Nightly Builds” for those who want to test the absolute latest code.2 When you download and use OrcaSlicer 2.3.1 Alpha, you are not merely a consumer; you are a collaborator. The feedback you provide, particularly through well-documented bug reports, is invaluable data that helps the developers refine, debug, and perfect these new features before they are rolled into a stable release.1 This guide will not only show you how to use the new flow calibration but also how to responsibly contribute back to the project that provides these powerful tools for free.

From Subjective Feel to Objective Data: A Paradigm Shift in Flow Calibration

The Old Way: Limitations of the Diagonal Surface Test

To fully appreciate the brilliance of the new flow calibration method, we must first understand the limitations of the one it replaces. For a long time, flow rate calibration in OrcaSlicer (and many other slicers) involved printing a series of square patches, each with a different flow modifier.[4, 5] The top surface of these squares was printed with a simple diagonal line pattern, moving back and forth at a 45-degree angle.1

The process for determining the correct flow rate was almost entirely subjective. The official instruction was to run your fingers across the printed squares and select the one that felt the smoothest to the touch.1 While this method can work, its effectiveness is heavily dependent on the user’s experience and tactile sensitivity. A beginner might struggle to discern the subtle differences between patches, while even an expert’s judgment could be influenced by lighting or the specific texture of the filament. This subjectivity was the primary weakness of the old system, creating a barrier to achieving consistent, repeatable results.

Introducing the Archimedean Chord: A Smarter Pattern for a Smarter Slicer

The 2.3.1 Alpha release replaces the ambiguous diagonal pattern with a far more intelligent design: a concentric pattern based on an Archimedean chord.1 This isn’t just a cosmetic change; it’s a fundamental re-engineering of the test based on geometric principles.

An Archimedean spiral is a shape defined by a path that moves away from a central point at a constant angular velocity. In simpler terms, the distance between each successive turn of the spiral remains constant. When the toolhead of a 3D printer traces this path, it should lay down a series of perfectly concentric lines with a uniform gap between them. This geometric purity is the key to the test’s effectiveness. Any deviation from the ideal amount of extruded filament—either too much or too little—will immediately disrupt this perfect, repeating pattern in a way that is visually and tactically obvious.

Unlike the old diagonal pattern, where over-extrusion might simply result in a slightly rougher surface, the Archimedean pattern provides clear, unmistakable evidence. This new test, as highlighted in the updated OrcaSlicer wiki, is now the recommended method for dialing in your flow rate.1

The Democratization of Precision

This evolution from a tactile, experience-based method to a visually explicit one represents more than just a technical upgrade; it’s a move that democratizes precision in 3D printing. It effectively lowers the barrier to entry for achieving one of the most critical calibrations, empowering users of all skill levels to diagnose and resolve extrusion issues with a newfound level of confidence.

The old method relied on an acquired skill—a developed “feel” for surface smoothness that created a knowledge gap between newcomers and seasoned veterans.1 The new test replaces this subjectivity with objective, observable data. Over-extrusion presents itself as distinct ridges where “the edge of the circle is really sticking out,” while under-extrusion creates clear “valleys” or gaps between the lines.1 These are not matters of opinion; they are measurable physical artifacts.

This aligns perfectly with OrcaSlicer’s overarching mission: to package “advanced calibration tools” within a “user-friendly interface” that supports a “wide printer compatibility”.2 By making a foundational calibration process like flow rate easier to perform and more reliable to interpret, the software empowers a much broader range of users to achieve superior print quality. It removes the gatekeeper of subjective “feel” and replaces it with the clarity of visual evidence. This new feature is a perfect encapsulation of the project’s philosophy: it doesn’t just add power for experts; it engineers that power in a way that elevates the entire community.

A Practical Guide: Dialing in Your Flow Rate with the New Test

Prerequisites and Setup

Before you jump into printing the new calibration test, a little preparation will ensure you get the most accurate results possible.

First, this test is designed to refine an existing flow rate, not to establish one from absolute zero. It is most effective when you start with a filament profile that is already reasonably well-configured. The calibration test works by applying small positive and negative modifiers to your filament’s current flow ratio setting. As the transcript notes, “it doesn’t reset it back to one. It’s based on what it’s currently set at”.1 So, if your filament profile’s flow ratio is already set to 0.98, the test chips will be modifiers based on that value.

Second, for the most scientifically accurate calibration, it’s crucial to follow the recommended order of operations. According to the official OrcaSlicer wiki, you should always calibrate temperature before calibrating flow rate.4 The temperature of your nozzle directly affects the viscosity of the filament, which in turn impacts how it flows. Dialing in your temperature first ensures that you are calibrating flow under the correct thermal conditions.

Step 1: Launching the Calibration Test

With your slicer open and your printer profile selected, launching the new test is straightforward.

Navigate to the top menu bar.
Click on the “Calibration” dropdown.
Select “Flow Rate.” A new test plate will be automatically generated in your workspace.

You will see a series of small, square chips laid out on the build plate. Each chip is labeled with a modifier value, such as 0, -0.01, +0.01, etc. This is the new, recommended test that utilizes the Archimedean pattern.1

Step 2: Printing and Initial Observation

Once the test plate is generated, simply slice it using the filament profile you wish to calibrate and send it to your printer. While it’s printing, prepare a well-lit area for inspection. Good lighting is critical for visually identifying the subtle surface differences between the test chips.

Step 3: Interpreting the Print – The Art of Sight and Touch

This is the most critical part of the process. Once the print is finished and has cooled, carefully remove it from the build plate. You will now analyze each chip, using both your eyes and your fingertips, to find the one that represents the “Goldilocks” zone of perfect extrusion.

Identifying Over-extrusion

Over-extrusion occurs when the printer pushes out too much filament. On the Archimedean pattern, this is incredibly easy to spot.

Visual Cues: Look for concentric circles where the edges are raised and pronounced. As the transcript describes, “the edge of the circle is really sticking out”.1 This happens because the excess plastic has nowhere to go and is forced upwards, creating distinct ridges. The surface may look overly glossy and lose fine detail.
Tactile Cues: When you run your finger across an over-extruded chip, it will feel bumpy and rough. You will be able to clearly feel the ridges formed by the excess filament. The chips with positive modifiers (e.g., +0.03, +0.05) are most likely to exhibit these characteristics.

Identifying Under-extrusion

Under-extrusion is the opposite problem: the printer is not pushing out enough filament to fill the toolpath completely.

Visual Cues: Look for visible gaps between the concentric lines. You may be able to see the layer below through these gaps. The transcript refers to these as “valleys” in the surface.1 The surface might also have a dull, matte, or unfinished appearance because the lines are not properly squishing together.
Tactile Cues: An under-extruded chip will feel textured or even hollow. Your finger will catch on the gaps between the lines, giving it a rough or scratchy feel. The chips with negative modifiers (e.g., -0.03, -0.05) are the primary candidates for this issue.

The “Goldilocks” Zone – Identifying the Optimal Result

Your goal is to find the single chip that is perfectly smooth, both visually and by feel.1

The Ideal Chip: The best chip will have a uniform, smooth top surface with a consistent, healthy shine.1 The concentric lines should be laid down perfectly next to each other with very little to no visible gaps. When you run your finger across it, it should feel almost like a single, solid surface. In my own testing for the video, the chip labeled 0 was the best, indicating my existing flow rate was already well-calibrated.1
An Important Nuance: It is crucial to understand one key detail from the official documentation: “it is okay to have a visible line between the inner and outer spiral”.1 The goal is not to create a completely fused, monolithic surface where the lines are indistinguishable. The perfect result is one that shows distinct lines laid down with “very little gap between” them.1 Do not mistake the faint line between toolpaths for under-extrusion. You are looking for the smoothest possible surface that is free of ridges (over-extrusion) and significant valleys (under-extrusion).

Step 4: Applying the Results and Updating Your Profile

Once you have identified the best chip, updating your filament profile is incredibly simple. The value printed on the chip is the exact modifier you need to apply to your current flow ratio.

The logic is simple addition or subtraction:

If you picked a chip with a positive value (e.g., +0.02), you add that value to your current flow ratio.
If you picked a chip with a negative value (e.g., -0.03), you subtract that value from your current flow ratio.
If you picked the 0 chip, no changes are needed.

Let’s use the concrete example from the transcript: imagine your filament’s flow ratio was set to 0.98 and you determined that the chip labeled +0.01 was the smoothest. Your new flow ratio would be $0.98 + 0.01 = 0.99$.1 This direct arithmetic is a significant improvement in user experience over older, more complex percentage-based formulas.[4, 5]

To make the change in OrcaSlicer:

Go to the “Filament” tab in the left-hand panel.
Click the “Edit preset” icon next to your chosen filament profile.
In the filament settings window, scroll down until you find the “Flow Ratio” parameter.
Enter your newly calculated value.
Crucially, click the “Save” icon at the top of the window to save your changes to the profile. Forgetting this last step is a common mistake that will cause you to lose your newly calibrated value.

The Enabler’s Guide: Responsible Use of Alpha Software

You Are Now Part of the Development Team

Choosing to use alpha software is choosing to step onto the front lines of development. It’s a decision that reframes your role from a passive user to an active tester and contributor. Every print you run, every setting you tweak, provides real-world data that is impossible to replicate in a controlled lab environment. By engaging with these new features early, you are providing an invaluable service to the developers and the entire OrcaSlicer community. You are helping to forge the tools that everyone will be using in the next stable release.

How to Submit an Effective Bug Report: A Checklist

Finding a bug in alpha software is not a failure; it’s a success. It’s an opportunity to contribute directly to the project’s improvement. However, the usefulness of your discovery depends entirely on the quality of your bug report. A vague or incomplete report is often unusable. To help you make the most impactful contributions, here is a checklist for submitting an effective bug report on the OrcaSlicer GitHub page, based directly on best practices.1

Step	Action	Why It’s Important
1	Search First	Go to the OrcaSlicer GitHub “Issues” page and search to see if your bug has already been reported.
2	Provide Context	State the exact OrcaSlicer version (e.g., 2.3.1 Alpha), your Operating System (e.g., Windows 11, macOS Sonoma), and OS version.
3	Document Steps	Write a clear, numbered list of the exact steps required to reproduce the error. Be as specific as possible.
4	Include Your Setup	Mention the specific 3D printer profile you are using (e.g., Voron 2.4, Bambu Lab X1C, Creality Ender 3).
5	Add Visuals & Logs	Attach screenshots that clearly show the issue. If the slicer crashes, include the debug log file it generates.

The Power of Community Feedback

A well-structured bug report is one of the most powerful contributions a user can make to an open-source project. It transforms a moment of frustration into a constructive step toward a more robust and reliable piece of software for everyone. Despite its “Alpha” status, my own experience with version 2.3.1 has been that it “seems rock solid,” a testament to the quality of the developers’ work and likely the result of excellent community feedback during the nightly build phase.1

Conclusion, Community, and Further Resources

Summary: A Step Forward for Precision

The introduction of the Archimedean chord flow calibration in OrcaSlicer 2.3.1 Alpha is a definitive step forward for precision 3D printing. By replacing a subjective, tactile test with a visually objective and geometrically intelligent one, OrcaSlicer has made a critical calibration process more accessible, repeatable, and accurate for users of all experience levels. It is a smarter test for a smarter slicer, and a perfect example of the thoughtful innovation that defines the project.

Join the Conversation: A Call to Action

Your experience and feedback are what make the 3D printing community thrive. Now that you’ve learned about this new feature, I encourage you to join the conversation.

Have you tried the new flow test? What were your results? Is there another new feature in the 2.3.1 Alpha release that you feel I should highlight in a future guide? As I always say, “just leave me a comment and I’ll get back to you as soon as I can”.1
If you found this guide valuable, please consider giving it a few ‘claps’ here on Medium. This is a simple, free way to show your support, and it helps the platform’s algorithm show this article to more people who might benefit from it.
For more deep dives, tutorials, and the latest updates in 3D printing and OrcaSlicer, be sure to subscribe to my YouTube channel and follow me here on Medium.1

The OrcaSlicer Ecosystem: References and Further Reading

To continue your journey and become more involved with the OrcaSlicer project, here are the essential official resources. I strongly recommend bookmarking these to ensure you are always getting information from the primary source.

Official OrcaSlicer GitHub Repository: This is the home of the project. Here you can download the latest stable and alpha releases, read the full release notes, and report bugs.2
Official OrcaSlicer Wiki: An invaluable resource for detailed documentation on all of OrcaSlicer’s features, including the main Calibration page which provides a broader overview of the entire tuning process.4
Official OrcaSlicer Discord Server: The best place to engage with the community in real-time, ask questions, and get support from fellow users and the developers themselves.2

Finally, I want to extend a heartfelt thank you to all of my subscribers and members. Your support is what makes it possible for me to create in-depth content like this guide. Thank you for being a part of this community.1

Level Up Your Prints: Why Line Width is Your 3D Printing Secret Weapon

May 3, 2025

Wilson M

Maintainer

Level Up Your Prints: Why Line Width is Your 3D Printing Secret Weapon

Hey everyone! In my latest video, I dove deep into a 3D printing setting that often gets overlooked but makes a massive difference in your final prints: line width. For a long time, I was all about chasing faster print times, but I’ve come to realize that optimizing for quality and strength is well worth a few extra minutes – and line width is a key player in achieving just that [00:35].

What I Learned (and You Should Too!):

One of the biggest takeaways for me was just how much line width impacts the strength of your parts. Think about it: wider lines mean more material is laid down and there’s greater overlap between those lines, especially when it comes to printing walls. This significantly reduces those annoying little voids and makes your prints much more structurally sound [01:25], [03:06].

In the video, I specifically explored the line width settings within Orca Slicer. It’s pretty cool how much control you have, with options for the default width, the first layer, outer walls, and even the top surface [01:38].

Through my research (and a bit of trial and error!), I found that for a standard 0.4mm nozzle, bumping up the default line width to around 0.5mm (that’s 125%) seems to be a sweet spot. This aligns with recommendations in the Orca Slicer wiki and what others in the community are finding [05:10].

The best part? I was genuinely surprised at how little impact these adjustments had on the overall print time. The test print I showed in the video only took about 7 seconds longer with the optimized settings [10:06]. That’s a tiny trade-off for a noticeable improvement in quality!

Speaking of quality, I was really happy with how much cleaner the top surface looked after making these changes. You could see a real difference in how those layers blended together, resulting in fewer visible lines [11:22].

Oh, and here’s a little bonus tip I shared in the video: if you’re struggling with removing support material, try using a slightly thinner line width (smaller than your nozzle diameter) for your support structures. It makes them much easier to break away [08:37].

Give it a Shot!

Ultimately, what I wanted to show in this video is that taking the time to dial in your line width settings is well worth the effort. It’s all about finding that balance between print speed, the quality of your finished product, and the overall strength of your 3D prints [12:33].

Check out the full video for a more in-depth look and to see the results for yourself!

Watch the video here: Video Link

Let me know in the comments what line width settings you’ve found work best for you – I’m always learning! What else are you curious about in the world of 3D printing?

Extrusion Rate Smoothing in OrcaSlicer

Apr 18, 2025

Wilson M

Maintainer