5-10 days
Payments
Description
Description
Built for serious performance
Polymaker™ HT-PLA-GF combines high-temperature stability with enhanced strength and durability. Withstands up to 150°C without sagging or losing form. When annealed it can be perfect for functional parts that need to endure the heat. Learn More About the Product
Effortless Printing, Supercharged
Prints beautifully with standard PLA settings and supports speeds up to 350mm/s. Just load and go—no specialized tuning required.
Reinforced with Glass Fiber
Tougher. Stronger. Smarter. HT-PLA-GF is glass fiber-reinforced, delivering higher stiffness and durability for demanding applications.
Note: This material is abrasive—use a hardened steel or ruby nozzle for best results.
Need Extra Heat Deflection?
Anneal at 80–100°C for 30 minutes (we recommend 100°C) for an even higher HDT.
9 Striking Colors
Available in 9 bold shades, HT-PLA-GF brings serious strength and style to your prints.
Looking for more color options? Check out Polymaker HT-PLA
Printing Requirements
Print Settings
Print Settings
Polymaker™ HT-PLA-GF
- High Heat Resistance
- High-Speed Printing
- Glass Fiber Reinforced
- Easy to Print
Polymaker™ HT-PLA-GF - Black / 1kg is backordered and will ship as soon as it is back in stock.
Technical Specifications
Everything you need before you hit print
- Use a hardened nozzle because the filled or particle-containing formulation can wear brass nozzles.
- Anneal for 30 minutes at 80°C - 100°C (100°C recommended) when higher heat stability is required.
- Start within the recommended 210 - 230°C nozzle and 25 - 60°C bed ranges, then make small adjustments for the printer and model.
- Use the recommended ON cooling-fan setting and keep printing speed within Up to 350 mm/s.
| Property | X-Y | Z | Value | Method |
|---|---|---|---|---|
| Density | — | — | 1.337 g/cm³ Important | ISO 1183 |
| Tensile strength | 50.09 MPa Important | 23.68 MPa Important | — | ISO 527 |
| Elongation at break | 2.77 % Important | 0.85 % Important | — | ISO 527 |
| Bending strength | 86.41 MPa Important | 29.21 MPa Important | — | ISO 178 |
| Bending modulus | 3684.87 MPa Important | — | — | ISO 178 |
| Young's modulus | 3793.85 MPa Important | 3018.1 MPa Important | — | ISO 527 |
| Charpy, unnotched | 22.99 KJ/m² Important | — | — | ISO 179 |
| Charpy, notched | 4.92 KJ/m² Important | — | — | ISO 179 |
| Melting temperature | — | — | 174.87 °C Important | ISO 11357 |
| Glass transition temperature (Tg) | — | — | 59.76 °C Important | ISO 11357 |
| Vicat softening temperature | — | — | 148.9 °C Important | ISO 306 |
| HDT (0.45 MPa) | — | — | 75.5 °C Important | ISO 75 |
| HDT (1.8 MPa) | — | — | 59.7 °C Important | ISO 75 |
Tested on 100% infill specimens. X-Y = across the layers, Z = between the layers (layer adhesion).
Frequently Asked Questions
Got questions? We've got answers. From choosing the right material to caring for your spools, here's everything you need to know in one spot.
Can you anneal Polymaker™ HT-PLA’s?
What is Heat Stability?
Are Polymaker™ HT-PLA’s hygroscopic?
Are Polymaker™ HT-PLA’s UV / Weather resistant?
What is the shrinkage rate?
Are Polymaker™ HT-PLA’s dishwasher safe? (Food safety, water steam)
Can it print with PLA settings?
Are Polymaker™ HT-PLA’s abrasive?
Can you print Polymaker™ HT-PLA’s with a smaller nozzle?
What is the highest speed you can print at?
Does all the colors have the same heat resistance?
Is it biodegradable?
What is in HT-PLA?
Is it strong?
Does it have fumes when printing?
Can I anneal HT-PLA in boiling water?
Is this PLA also based on NatureWorks?
Does HT-PLA have similar chemical resistance as regular PLA?
What percentage of glass fiber (GF) is in the HT-PLA-GF composition?
Why do we choose to not put the fiber content % in the name similar to Fiberon?
Could CoPE work well as a support material?
down in the oven after annealing?
Customers praised this glass-fiber reinforced filament for exceptional heat resistance and ease of printing. "Easy to print and super strong," with a textured matte finish that minimizes layer lines. Most found it prints like regular PLA with superior dimensional stability. Some noted brittleness issues and difficult support removal, requiring hardened nozzles.
This is an amazing filament. Perfect for everyday functional prints. If you want a natural non-smooth finish that shows minimal layer lines then look no farther.
prints as easy as PLA, but significantly better heat resistance, and the GF versions have a really nice textured finish that obscures the layer lines nicely.
I’ve used it for functional parts that are exposed to pretty hot temperatures inside our motorhome and they’ve held up very well.
I am in love! This filament is amazing to work with and definitely adds the next level I needed to do some work with PLA. I had some brand specific projects I wanted to do and wanted the colors to match. It was great to see them come to life.
HT-PLA-GF Grey printed on X1C using default PLC-CF profile, 230 C temp. Printed without any issue. Most importantly the supports came off very easily and cleanly. By far that is my favorite property of PLC-CF now GF. I hope they stock them as refills so they'll run better in an AMS.
Excellent heat resistance. Gives an amazing finish for walls. Just wipe down any parts you make with this to break off any glass fibers that are protruding.
Easiest fiber reinforced filament I have ever used. Easiest high temp filament I have used. Printing functional power tool parts for outdoor use.
Great to work with
Polymaker is my go-to source for filament, with an amazing color palette and an unbeatable, strong, tough series. I haven’t tried HT-PL-GF yet, but from the reviews I’ve read, everyone praises its strength and ease of printing.
EXCELLENT filament! I own mainly Milwaukee tools, and these new filaments are perfect! I have even turned some friends (they are all Makita) to your new colors!
Perfect for this project (PLA Filament Spool). It is a little finicky to print. Very Hard but also brittle. It broke in the PTFE tube once. High temperature characteristics were spot on, just as described. It has a very interesting texture. It feels nice to the touch, but the extruder had some trouble grabbing it.
I purchased this to print a battery holder for a friend and it worked flawlessly.
This is absolutely my favorite PLA to use!! Will continue using it unless an even better material comes out!
I love this filament. I designed and printed a phone holder for my car. The glass fibers make it look incredible. I've annealed the print, I've had no issues with softening in the car on a hot day. Also, it's about the only PLA I have that I don't have warping issues with, it's super stable and dimensionally accurate. It's my new favorite filament. Make sure you use a hardened nozzle with it.
I was very impressed with the PolyMaker HT-PLA-GF. I printed using .4 hardened nozzle with my Qidi Plus 4 with typical speeds used for PLA with additive in it. I push temps up to the 230C-234C, which for speed I run works out perfect in my experience after thousands of hours perfecting my Plus4 tuning. I then decided to anneal this filament to see full benefits. This was a very easy process and the results were very noticeable. Two parts of item I made when banged together rung out like solid wood.
I was very happy with my final results, will keep this material on hand for other unique projects that require the amazing tensile strength of PLA mixed with the high temp resistance found with Poly Maker HTPLA-GF. Do anneal your prints, this can very easily be done direct on your build plate if your part is not too thick. The result of annealing was impressive. Thank you PolyMaker for such a wonderful product. I will be purchasing your HT line more often going forward.
I would love to see PCTG from PolyMaker?
Good filament but does not work for structural parts in the heat. Annealing helps but I can achieve better results with GF ASA with no post processing
This is definitely my favorite PLA. It can withstand high heat temperatures. I already have stuff 3-D printed and put on my boat and it’s doing great. I love the texture of the Glassfield PLA it prints great if I had to give it a couple cons, it is stringy, but that can be fixed with just a little bit heat heat and I also printed at 250° C because I tried to get the best of layer adhesion and that’s the only other con. But it prints so beautifully
It prints like a dream, has the finish texture that you love of fiber filaments and won't turn into a puddle when accidentally left in your car! The support removal is impressive as well, it really does release from itself as a support material quite nice.
I live in Florida, so gear has to hold up to not only the 90+f temps and high humidity, it has to survive inside 110+f vehicle interiors. It's nice to be able to print something quick and easy that will survive those conditions. It's a nice, simple alternative to ABS or PA for some applications, without the need for a lot of dryer time, or annealing. Just print and go.
Also very impressed with the quality of the print without any tweaking, just used Polylite presets in Bambu Studio and it worked a treat.
This PLA is tough, very stiff, and stood up to being left in a hot car
Nice texture and amazing temperature resistance!
