3D-Fuel Pro PCTG is like PETG but better in many ways. It is tougher (up to 30x tougher than PETG), more chemically resistant, and has even greater clarity than PETG. Pro PCTG is an easy-to-use material with a lower moisture absorption rate than PETG and doesn't require an enclosure - use it just like PETG.

The broad color selection and ease of printing make it an ideal choice for printing in a multi-color 3D printing system like the Bambu Lab AMS.

Print Profiles

Print profiles for Pro PCTG on the Bambu Lab printers are available here.

Bambu AMS Compatibility

Since October 2023, the 3D-Fuel Standard PLA+ has been manufactured using an AMS-compliant spool (more info on our spool sizes and weights). Since it takes time for some colors to move through our warehouse inventory, you may receive an older spool type. This is still compatible with the AMS, but you must leave the lid open a few mm.

Pro PCTG is 20-50% More Impact Resistant Than PETG

Key Reasons for Better Impact Toughness:

Molecular Structure:
- PCTG contains cyclohexane dimethanol (CHDM), which gives it increased flexibility and toughness compared to PETG’s ethylene glycol structure.
Flexibility vs. Brittleness:
- PCTG is more ductile, allowing it to absorb and dissipate energy during impact without cracking or shattering.
Layer Adhesion:
- PCTG has better inter-layer bonding when 3D printed, reducing weak points in the structure where impact forces might cause failure.

Real-World Implications:

Drop Resistance:
- PCTG parts are less likely to crack, chip, or break when dropped, making it ideal for high-impact applications like enclosures or wearable devices.
Repeated Stress:
- PCTG can endure repeated bending or sudden forces better than PETG, making it more suitable for hinges, clips, and flexible parts.
Durability in Extreme Conditions:
- PCTG resists embrittlement under low temperatures, maintaining its toughness in environments where PETG may fail.

Example Use Cases Benefiting from PCTG's Toughness:

Protective housings for electronics or tools.
Drone parts and propeller guards.
Flexible clips, snap-fits, and living hinges.
Impact-resistant containers or enclosures.

Chemical Resistance

Chemical Type	Examples	PCTG Advantage	PETG Limitation	Comparison (CRR)
Alcohols	Isopropyl alcohol (IPA), ethanol, methanol	Resists prolonged exposure without degrading or cracking.	Degrades or stress cracks with high alcohol concentrations over time.	1.8
Hydrocarbons	Hexane, heptane, gasoline, mineral spirits	Better resistance to hydrocarbon-based solvents.	Softens or weakens when exposed to hydrocarbons.	2.0
Acids	Acetic acid, citric acid, phosphoric acid	Maintains structural integrity in mild to moderately concentrated acids.	Degrades faster in acidic environments at higher concentrations.	1.4
Bases (Alkalis)	Sodium hydroxide, potassium hydroxide, ammonium hydroxide	Better resistance to strong alkalis.	May crack or degrade when exposed to strong bases.	1.33
Cleaning Agents	Bleach (sodium hypochlorite), industrial degreasers, detergent solutions	Withstands harsh cleaning agents without discoloration or damage.	Discolors, cracks, or loses properties with harsh cleaning agents over time.	1.5
Oils and Lubricants	Engine oils, hydraulic fluids, cutting oils	Resists degradation from prolonged exposure to oils.	Absorbs oils over time, potentially leading to swelling or weakening.	1.6
Ketones	Acetone, methyl ethyl ketone (MEK)	Performs slightly better in low-concentration ketones.	Softens or dissolves more readily in ketone-rich environments.	1.2

Pro PCTG Has Lower Moisture Absorption Than PETG

PETG:
- Hygroscopic: PETG absorbs moisture from the air, but at a relatively low rate compared to more hygroscopic materials like nylon or TPU.
- Moisture Absorption Rate: Approximately 0.2–0.3% by weight after prolonged exposure to humid environments.
- Effects of Moisture:
  - During printing, moisture in PETG can lead to stringing, bubbling, and surface defects due to water vaporizing in the hotend.
  - Mechanical properties (like impact strength) can slightly degrade over time with prolonged exposure to high humidity.
PCTG:
- Slightly Lower Moisture Absorption: PCTG absorbs less moisture than PETG, typically around 0.1–0.2% by weight.
- Improved Resistance: Due to its cyclohexane dimethanol (CHDM) component, PCTG’s molecular structure makes it less hygroscopic and more resistant to moisture-induced degradation.
- Effects of Moisture:
  - PCTG generally performs better than PETG in humid conditions, retaining clarity, toughness, and dimensional stability for longer periods.

Why the Difference?

Molecular Structure:
- PETG’s glycol modification increases flexibility but leaves the material slightly more hygroscopic.
- PCTG’s modified structure with CHDM reduces the polar sites available for moisture interaction, resulting in less absorption.

Practical Implications:

3D Printing:
- PETG: Requires drying more frequently, especially if exposed to humid environments, as even slight moisture absorption can lead to print defects (bubbling, stringing, poor adhesion).
- PCTG: Requires less frequent drying, making it easier to handle in environments with higher humidity. It is also more forgiving if printed without drying.
Storage:
- Both materials benefit from being stored in airtight containers with desiccant.
- PCTG will be less prone to degradation if exposed to moisture for extended periods compared to PETG.
Long-Term Use in Humid Environments:
- PCTG is more stable and less likely to lose mechanical properties over time in high-humidity settings.

Drying

For both materials, drying before printing and proper storage is recommended for optimal performance, but PCTG is less maintenance-intensive in this regard.

When you need to dry Pro PCTG, use a temperature of 60-70C for 4-8 hours.

Available In 25 Colors

Color Name	Display	Hex Code	Closest Pantone®
Natural		Clear	Clear
Brightest White		#EBECEA	P 179-1 U
Snow White		#F2F2ED	P 1-1 C
Desert Tan		#C1AC98	15-1309 TPG
Flat Dark Earth		#977B6C	4257 CP
Chocolate Brown		#58413B	P 67-16 C
Bubblegum Pink		#EAAAB6	4064 UP
Grape Purple		#5E528F	7679 CP
Cobalt Blue		#0C3681	2736 CP
Ocean Blue		#0069A4	2935 CP
Olive Green		#545746	176-15 C
Grass Green		#4D9D5A	P 139-8 U
LulzBot Green		#C8CB18	14-0443 TPG
Daffodil Yellow		#FFC02C	109 UP
Tangerine Orange		#EF744C	16-1349 TPG
Fire Engine Red		#C73229	P 52-16 C
Iron Red		#8A292A	P 54-8 C
Metallic Copper		#894D3F	7601 CP
Metallic Gold		#C58F4C	16-0950 TPG
Metallic Silver		#7D8081	Cool Gray 11 U
Industrial Gray		#858B8D	Cool Gray 10 U
Charcoal Gray		#4D545A	296 UP
Midnight Black		#353535	19-4006 TPG
Fluorescent Orange		#EA7A68	P 45-5 U

Additional Filament Information

Recommended Printing Temperature: 260-280C
Recommended Bed Temperature: 70-80C
Bed Surface: PEI, heated bare glass, BuildTak, WhamBam
Recommended Print Speed: 60 – 250 mm/s

Pro PCTG TDS
Pro PCTG SDS

Quality:
All 3D-Fuel 3D printer filament is manufactured in the United States. We have complete control over the manufacturing process and can ensure consistent quality for every spool. Learn more about 3D-Fuel filament quality.

Diameter Tolerance:
Variable 3D filament diameters can cause significant problems in your 3D printer. We use a multi-axis laser measurement system to control our filament diameter and ovality in real time during production.

Packing Information:
A full 1kg (2.2 lbs) of Pro PCTG plastic filament arrives on a durable plastic reel compatible with the Bambu Lab AMS. The reel is vacuum-sealed with a desiccant packet to keep out moisture.

Test Printing:
The 3D-Fuel test lab features multiple brands of 3D printers, including Bambu Lab, Creality3D, Prusa, Raise3D, MakerBot, LulzBot, FlashForge, and more. We use what we manufacture in our 3D printing operations to ensure that our filament provides the best quality possible.

1.75mm General Purpose