Is Polymaker ASA 3D Printing Filament Worth It for Outdoor Parts?
Worth it, but only for parts that actually see the sun
around $25price at time of review — check Amazon for current
- Worth it ifYou're printing functional parts meant to live outside or near heat, like RC bodies, car accessories, or garden fixtures
- Skip it ifYour printer is open-frame with no enclosure and you print mostly indoor, decorative items
Amazon shoppers rate it 4.5 out of 5 across 2,264 ratings. That is their number, not ours.
By Errol Whitfield, tools & DIY · updated 2026-07-30
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Picture the clip you printed for your car's dash vent, solid all winter, then splitting the first hot afternoon it spends baked behind the windshield. Or the drone mount that looked fine in the garage and turned chalky and brittle after one summer on the balcony. That's the failure standard filament doesn't warn you about, and it's the exact gap Polymaker's ASA 3D printing filament is built to close.
Regular ABS and ASA are chemical cousins, but the difference is in one ingredient. ABS uses butadiene rubber to add toughness, and butadiene has a weakness: ultraviolet light breaks its molecular bonds over time, which is why ABS parts left outside go brittle and chalky. ASA swaps that rubber for an acrylic-based elastomer instead, one that doesn't degrade the same way under sunlight. That single substitution is the whole product: it's why a bracket or an RC plane part holds its color and its flex after months outside instead of cracking the first time you flex it. The heat resistance, up to 100˚C, is the other half of the deal, it's why a part mounted near an engine bay or sitting in a hot car doesn't slowly warp out of shape. None of that comes free, though. Getting there takes a hot nozzle (around 250˚C) and a hot bed (around 90˚C), and the same toughness that resists weather also makes the plastic more prone to warping mid-print if the surrounding air isn't controlled, which is why an enclosure isn't optional here the way it might be with PLA.
You're not really buying filament, you're buying the right to leave a part outside and stop thinking about it. The black color and the spool are incidental, the acrylic chemistry underneath is the actual product. The only question worth asking is whether what you're printing will ever see sun, heat, or weather, because that's the only place this filament earns its keep over something cheaper.
Worth it if
- You're printing functional parts meant to live outside or near heat, like RC bodies, car accessories, or garden fixtures
- You already run (or plan to run) an enclosed printer to manage warping
- You want a part that keeps its color and flex after months of sun exposure
Skip it if
- Your printer is open-frame with no enclosure and you print mostly indoor, decorative items
- You want a beginner-friendly filament with minimal tuning, PLA will fight you less
- You need a large flat part and can't manage a heated, draft-free print area
Not for open-frame printers or purely decorative indoor prints where UV and heat resistance never come into play.
If you're printing brackets, mounts, or outdoor fixtures and you've got an enclosed printer, this is a quiet yes, it'll do the one job cheaper filaments can't. If everything you make stays indoors on a shelf or a desk, or your printer is open-frame and fights warping already, save the extra cost and the hassle, and print in PLA or ABS instead.
Check price on Amazon · around $25 or Add it to your Amazon cart to sit on it
Before you go
Is Polymaker better than Sunlu?
For outdoor and heat-resistant functional parts specifically, Polymaker's ASA formulation targets that use case more directly, but for general-purpose PLA printing the two brands are closer in day-to-day results and the choice comes down to your printer's tuning, not the brand name.
What is the best Polymaker filament for beginners?
Polymaker's PLA lines print far more forgivingly than ASA, since ASA's higher temperatures and warping tendency reward an enclosed setup and some prior print experience.
Full spec sheet
| Brand Name | Polymaker |
|---|---|
| Additional Features | Weather and Heat Resistance |
| Manufacturer Part Number | PF01001 |
| Unit Count | 35.27 Ounce |
| Number of Items | 1 |
| Model Number | PF01001 |
| Item Weight | 1 kg |
| Item Diameter | 1.75 millimeters |