Published on Wed Oct 23 2024 23:50:00 GMT+0000 (Coordinated Universal Time) by Alex

ColorFabb PLA/PHA: A Comprehensive Review and User Guide

ColorFabb is a well-known name in the 3D printing filament world, and their PLA/PHA blend is a popular choice for many makers. This filament aims to provide a balance between the ease of use of standard PLA and the improved toughness and flexibility offered by PHA (polyhydroxyalkanoate). Let’s dive into the specifics, usage tips, and a critical assessment of its strengths and weaknesses.

What is ColorFabb PLA/PHA?

PLA/PHA, as the name suggests, is a blend of Polylactic Acid (PLA) and Polyhydroxyalkanoate (PHA). PLA is a biodegradable thermoplastic derived from renewable resources like corn starch or sugarcane. It’s known for its low printing temperature and relatively low warping tendencies. PHA, also a biodegradable polyester, is produced by microorganisms and enhances the toughness and impact resistance of the resulting filament. The blend aims to improve on PLA’s brittleness while retaining its printability.

Detailed Specifications:

Diameter: Typically 1.75mm or 2.85mm (confirm with your supplier).
Density: ~1.24 g/cm³
Glass Transition Temperature (Tg): ~55°C (important for heat resistance)
Printing Temperature: Recommended range of 190-220°C.
Bed Temperature: 50-60°C recommended but can print without heated bed
Spool Weight: Available in various spool sizes, usually ranging from 750g to 2.2kg.
Color Range: ColorFabb is known for its wide and vibrant color palette. They often offer unique and visually appealing colors and special blends.
Specific notes: Due to this filament being modified with PHA that adds flexibilty, it will bend easily. Make sure your printer is able to load flexible materials and avoid Bowden style extruders.

Usage Tips for Optimal Results:

Temperature Tuning: Start with the recommended printing temperature of 210°C and fine-tune in 5°C increments. Too low, and you might experience weak layer adhesion. Too high, and you could see stringing or oozing.
Bed Adhesion: A heated bed is recommended (50-60°C), but you can print on a cold bed if you use an adhesion promoter like glue stick, hairspray, or painter’s tape. A clean and level bed is crucial.
Print Speed: A moderate print speed (40-60mm/s) is generally recommended for PLA/PHA. You can increase this slightly if you are using a direct drive extruder.
Cooling: Use a cooling fan to help solidify layers and prevent warping, especially for overhangs and small details. Start with 50% fan speed and increase as needed.
Retraction Settings: Calibrate your retraction settings to minimize stringing. Start with a retraction distance of 4-6mm and a retraction speed of 25-40mm/s.
Storage: Like all filaments, PLA/PHA is hygroscopic (absorbs moisture from the air). Store it in an airtight container with desiccant packs to keep it dry and prevent printing issues. You can dry it at 45-50°C for 4-6 hours to remove moisture.
First Layer: Pay careful attention to your first layer height and extrusion width. A slightly squished first layer promotes good adhesion.
Software: Use slicers like Cura, Simplify3D, or PrusaSlicer.

Advantages of ColorFabb PLA/PHA:

Improved Toughness: PHA increases impact resistance compared to standard PLA.
Easier Printing Than ABS: Lower printing temperatures and minimal warping make it easier to use than ABS.
Biodegradable: PLA/PHA is a more environmentally friendly option compared to petroleum-based plastics.
Wide Color Range: ColorFabb offers a diverse and appealing color selection.
Odor: Very minimal smell when printing.

Disadvantages of ColorFabb PLA/PHA:

Heat Resistance: Lower heat resistance (Tg ~55°C) compared to ABS or PETG limits its use in high-temperature applications.
Moisture Sensitivity: PLA/PHA is susceptible to moisture absorption, which can lead to brittle prints and nozzle clogging.
Price: ColorFabb filaments are generally more expensive than budget PLA options.

Detailed Evaluation (Out of 10):

Print Quality: 8/10 - Produces smooth, detailed prints with proper settings.
Toughness: 7/10 - Noticeably tougher than standard PLA but not as strong as PETG or ABS.
Flexibility: 5/10 - Has some flexibility, moreso than PLA, but not designed for highly flexible applications.
Warping: 9/10 - Minimal warping, making it suitable for large prints.
Adhesion: 8/10 - Excellent bed adhesion with proper bed preparation.
Moisture Sensitivity: 6/10 - Moderately sensitive to moisture; proper storage is essential.
Color Range: 10/10 - Excellent variety of colors and special blends.
Temperature Range: 7/10 - Relatively narrow optimal temperature range requires careful tuning.
Odor & Fumes: 9/10 - Very low odor during printing.
Spool Winding Quality: 9/10 - Generally well-wound spools minimize tangling.