Rev1 ASA-GF The Stiffened, UV-Stable, Weatherproof Engineering Filament
The Stiffened, UV-Stable, Weatherproof Engineering Filament
ASA-GF is glass-fiber-reinforced ASA: it keeps ASA’s UV stability and weatherproofing — it won’t yellow, fade, or crack in sunlight and weather — and adds chopped glass fiber for real stiffness, dimensional stability, lower warping, and higher heat deflection than plain ASA. A big step up in rigidity for outdoor structural parts, and more affordable than carbon-fiber ASA-CF. The glass is abrasive, so it needs a hardened-steel nozzle, and like all ASA it rewards an enclosed printer — one natural glass-filled color, on 1 kg and 3 kg spools. Full specifications →
Ships from Rev1, Auburn Hills MI — $44.99 per 1 kg. 3 kg spools in stock; 1 kg is made-to-order (1–3 weeks). Need case pricing? Call (248) 707-2950.
Glass-fiber stiffened, vacuum-sealed, supported by humans.
Rev1 ASA-GF is precision-extruded 1.75 mm glass-fiber-reinforced filament, wound evenly and vacuum-sealed with desiccant, then stocked and supported from Auburn Hills, Michigan.
When the outdoor part also has to stay stiff.
PLA yellows and softens in the sun; plain ASA is UV-stable but can flex and warp on big parts. ASA-GF is glass-fiber-reinforced ASA — it shrugs off sunlight, rain, and heat without fading, chalking, or cracking, and the chopped glass adds real stiffness, dimensional stability, and lower warping than plain ASA. It’s a big step up in rigidity for outdoor structural parts, at a more affordable price than carbon-fiber ASA-CF. The trade-offs: the glass is abrasive, so it needs a hardened-steel nozzle, and like all ASA it wants an enclosed, draft-free printer.
Even diameter and a clean wind for reliable, warp-free runs.
Round, consistent 1.75 mm glass-filled filament feeds smoothly so long enclosed prints don’t fail.
Every Rev1 ASA-GF spool is wound evenly and held to a tight diameter, so it feeds without under-extrusion across a full 1 kg or 3 kg run — through a hardened-steel nozzle for the abrasive glass fiber. Vacuum-sealed with desiccant to arrive dry — so it prints clean straight out of the bag.
Won’t yellow, fade, chalk, or crack in sunlight and weather — the go-to for parts that live outside.
Chopped glass adds rigidity and dimensional stability over plain ASA — stiffer parts with less warp.
Holds its shape hotter than plain ASA — far past where PLA and PETG soften, with less creep on big parts.
One natural grey-tan glass-filled finish. 3 kg spools in stock; 1 kg is made-to-order in 1–3 weeks.
Print settings for clean, crack-free ASA-GF.
ASA-GF prints like ASA — it rewards a stable, draft-free environment — with one hard requirement: the abrasive glass fiber needs a hardened-steel nozzle. An enclosure, a hot bed, and minimal part cooling keep corners down and layers bonded.
Hot for strong layer adhesion — and a hardened-steel nozzle is required, as the glass fiber wears out brass fast.
A hot bed plus glue or an adhesive sheet prevents the corners from lifting.
An enclosure holds chamber heat and blocks drafts — the #1 fix for warping and cracking.
Glass-filled ASA prints best dry — dry the spool before long runs and store it sealed with desiccant.
Recommended slicer settings
A solid starting profile for Rev1 ASA-GF on an enclosed FDM printer with a hardened-steel nozzle. Tune cooling and chamber temperature for your machine.
| Setting | Recommended | Notes |
|---|---|---|
| Nozzle temperature | 240–260 °C | Run hot for strong layer bonding and to reduce cracking. |
| Nozzle type | Hardened steel (required) | The glass fiber is abrasive and destroys brass nozzles. |
| Bed temperature | 90–110 °C | Glue stick or ASA slurry on glass/PEI for a strong first layer. |
| Chamber / enclosure | Warm, draft-free | The single biggest factor in warp- and crack-free ASA-GF. |
| Print speed | 30–60 mm/s | Moderate speeds help interlayer strength. |
| Part cooling fan | 0–20 % | Keep cooling low — too much fan cracks layers. |
| Retraction | 1–5 mm | Direct drive: ~1–2 mm. Tune to control stringing. |
| Nozzle size | 0.4 mm + | Larger hardened nozzles add strength on functional parts. |
| Drying | 65–80 °C · 4–6 h | Dry before long runs; the glass-filled blend prints best dry. |
Stiff structural parts that have to survive sun, rain, and weather.
The go-to material for stiff structural parts that live outside.
ASA-GF trades PLA's easy printing for real outdoor structural performance: UV stability, weatherproofing, high heat deflection, and glass-fiber stiffness and dimensional stability that plain ASA can't match — at a more affordable price than carbon-fiber ASA-CF. The glass is abrasive, so print it through a hardened-steel nozzle. One natural glass-filled color, on 1 kg and 3 kg spools, stocked in our US warehouse.
Sun, heat, and load? That's ASA-GF's home turf.
UV-stable and glass-fiber-stiffened for exterior brackets that won't fade, sag, or crack in the sun.
Exterior mounting brackets, trim supports, and structural body pieces that bake in the sun and get rained on — ASA-GF holds its color, its stiffness, and its shape where plain ASA would flex and PLA would warp.
Weatherproof housings that shrug off sun and rain — and stay rigid.
Glass-fiber-stiffened, UV-stable boxes and cases for outdoor electronics and equipment.
ASA-GF is the outdoor enclosure material — glass-fiber-stiffened walls that stay flat and true, clean snap-fits, and the weather resistance to sit outside for years without chalking, cracking, or fading.
Outdoor equipment mounts and brackets that last.
Glass-fiber-stiffened, dimensionally stable fixtures that stand up to sun, heat, and the elements.
Print the outdoor-equipment mounts and brackets your install needs — ASA-GF keeps its shape and stiffness through heat cycles and UV exposure, with far less creep under load than plain ASA.
Security-camera and sensor housings built for the weather.
Rigid, UV-stable shells that protect electronics outdoors year-round.
Outdoor camera, antenna, and sensor housings live in full sun and driving rain — ASA-GF's weatherproofing keeps them from yellowing or cracking, and the glass fiber keeps thin walls stiff and dimensionally true so lids and seals stay tight.
Rooftop and solar mounts that don't sag in the sun.
Glass-fiber-stiffened, UV-stable brackets that resist heat cycling and creep under load.
ASA-GF is the pick for rooftop and solar-panel mounting brackets — it stays UV-stable through years of full-sun exposure, and the glass fiber gives it the stiffness and low creep to hold panels and hardware square where plain ASA would soften and sag.
Stiff, lightweight drone frames made to fly in the elements.
Glass-fiber rigidity and weather resistance for real-world, all-season flight.
Quadcopter frames, arms, and structural shells that have to stay stiff in the air and outdoors — ASA-GF's glass fiber resists flex and vibration while its UV stability holds up through sun, rain, and heat where PLA would fail. Ask us about 3 kg spools and case pricing.
ASA-GF vs. plain ASA vs. ASA-CF.
All three are UV-stable and weatherproof. ASA-GF adds glass-fiber stiffness and dimensional stability over plain ASA while staying affordable; carbon-fiber ASA-CF is stiffer still but costs more; plain ASA is the easiest to print and the only one that smooths with acetone.
| Rev1 ASA-GF | Plain ASA | ASA-CF | |
|---|---|---|---|
| UV / weather resistance | Excellent — won’t yellow | Excellent — won’t yellow | Excellent — won’t yellow |
| Stiffness & dimensional stability | High — glass-fiber, low warp | Moderate | Highest — carbon fiber |
| Heat deflection | Higher than plain ASA | ~98 °C | Highest |
| Nozzle | Hardened steel (abrasive) | Brass OK | Hardened steel (abrasive) |
| Relative price | Affordable mid-tier | Lowest | Highest |
| Best for | Stiff outdoor structural parts | Easy / smoothed outdoor parts | Max-stiffness outdoor parts |
General material guidance; exact performance depends on part geometry, print settings, and grade. For maximum stiffness step up to ASA-CF; for the easiest prints or acetone smoothing use plain ASA.
Rev1 ASA-GF Technical Data
Mechanical & thermal properties
Typical glass-fiber ASA-GF values for engineering reference — higher modulus and heat deflection than plain ASA, with lower elongation and impact from the glass fiber. Printed-part performance varies with wall count, infill, layer height, and orientation — treat these as material-level guidance, not a part spec.
| Property | Typical Value | Method |
|---|---|---|
| Tensile strength | ~60 MPa | ISO 527 |
| Elongation at break | ~4 % | ISO 527 |
| Flexural strength | ~95 MPa | ISO 178 |
| Flexural modulus | ~4,500 MPa | ISO 178 |
| Izod impact (notched) | ~5 kJ/m² | ISO 180 |
| Glass transition (Tg) | ~100 °C | DSC |
| Heat deflection (HDT, 0.45 MPa) | ~105 °C | ISO 75 |
| Shelf life (sealed, dry) | 12 months | — |
Specs, profiles, and a human to call.
Your trusted materials partner.
Every spool is checked for tight diameter tolerance and reliable, repeatable printing.
Call (248) 707-2950 and reach people who actually print and support these materials.
Case quantities and standing orders on natural glass-fiber ASA-GF, 1 kg and 3 kg spools.
FAQ
Rev1 ASA-GF — Common Questions
Do I need an enclosure to print ASA-GF?
Strongly recommended. Like all ASA, ASA-GF warps and cracks when it cools unevenly or hits a draft — though the glass fiber helps it warp less than plain ASA. An enclosure holds chamber heat and blocks airflow, which is the single biggest factor in clean, crack-free prints. A heated bed at 90–110 °C is also essential.
Is ASA-GF really UV-stable and weatherproof?
Yes — it keeps ASA’s signature UV and weather resistance, so parts won’t yellow, fade, chalk, or crack in sunlight and rain the way ABS or PLA do. ASA-GF adds glass-fiber stiffness on top of that, making it the go-to for outdoor structural parts: automotive exterior brackets, weatherproof enclosures, mounts, sensor housings, solar mounts, and drone frames.
What color and sizes are available?
One color — Natural, the grey-tan glass-filled finish — on 1 kg and 3 kg spools. 3 kg spools are in stock and ship fast from Auburn Hills, Michigan; 1 kg is made-to-order and ships in 1–3 weeks. Pricing is $44.99 per 1 kg. Pick your spool size in the buy-box, or ask us about case quantities.
How do I stop ASA-GF from warping and cracking?
Enclose the printer, run a 90–110 °C bed with glue or ASA slurry, keep part cooling low or off, and avoid drafts and AC vents. The glass fiber gives ASA-GF better dimensional stability and lower warp than plain ASA, but it still cools like ASA — so a warm, draft-free chamber matters.
Do I need a special nozzle for ASA-GF?
Yes — a hardened-steel nozzle is required. The chopped glass fiber is abrasive and quickly wears out standard brass nozzles, opening up the bore and ruining dimensional accuracy. A hardened-steel (or equivalent wear-resistant) nozzle in 0.4 mm or larger handles it cleanly.
Can I acetone-smooth ASA-GF to a glossy finish?
Not really — the glass fiber prevents a clean vapor-smoothed surface, so ASA-GF is best left as a matte, structural finish. If you specifically want acetone vapor-smoothing and a glossy, molded look, choose plain Rev1 ASA instead; ASA-GF is built for stiffness, not surface finish.
How stiff and heat-resistant is ASA-GF?
The glass fiber roughly doubles flexural modulus over plain ASA (~4,500 MPa vs ~2,100 MPa) and raises heat deflection to about 105 °C, with better dimensional stability and lower creep — at the cost of lower elongation and impact toughness. It’s stiffer than plain ASA but not as stiff as carbon-fiber ASA-CF.
When should I use ASA-CF, plain ASA, or PLA/PETG instead?
For maximum stiffness on outdoor structural parts, step up to carbon-fiber ASA-CF (stiffer, but pricier). For easy outdoor prints or acetone smoothing where you don’t need the extra rigidity, plain ASA is simpler and cheaper. For easy indoor prints with no enclosure, PLA or PETG are the pick. ASA-GF is the affordable middle ground: stiff, UV-stable, and weatherproof.
Can Rev1 quote bulk or volume orders?
Yes. Tell us the quantity and we confirm stock and quote case pricing with standing-order scheduling, usually within one business day. 3 kg spools ship fast from stock; made-to-order 1 kg spools ship in 1–3 weeks. Call (248) 707-2950.