Prusament ASA 1.75mm 850g Prusa Orange

Guaranteed Color Consistency

Every Prusament color is formulated and locked to a documented spectroscopic recipe. We test every batch against the standard before it ships. If you run out mid-project, the next spool will match perfectly.

±0.02 mm Precision

We measure and record diameter and ovality continuously across the full length of every single spool, and we openly publish the actual data for tracking accuracy.

High Quality Verification

Every spool comes with a barcode to check its exact metrics online: diameter readings along the entire length, precise weight, and ovality parameters.

Perfect Winding Control

Wound under perfectly balanced tension on precision automation machinery. Avoids overlaps or knots, guaranteeing an even feed from start to finish.

Pros

• Great for outside use – UV stable
• Good high-temperature resistance
• Detailed prints without a stringing effect
• Can be smoothed with acetone vapors
• Can be easily sanded / post-processed
• Good mechanical resistance

Cons

• Large models tend to warp. We recommend printing in an enclosure or printing large components with a less warping material, such as PETG.
• Produces a slight odor of burned plastic during printing (less than ABS)
• Contains styrene (potentially harmful fumes). We recommend printing in a well-ventilated area or using an enclosure with active filtration.
• Slightly hygroscopic (absorbs moisture)

Use an enclosure with filtration system or print in a well-ventilated area

It’s important to run the prints in a well-ventilated room because the material releases fumes and substances that could pose a potential health risk. However, when ventilating the room, do not create a draft around the print – this will negatively impact the result. The best way is to use a 3D printer with an enclosure and an active filtration system.

Print in higher ambient temperature to prevent warping

You may encounter some issues related to the shrinking (warping) of the material, especially when printing larger models. This effect is much less severe compared to ABS, but still, even with the heatbed set to 110°C, the prints can shrink and warp, causing them to detach from the print bed. This issue can be eliminated by printing inside an enclosure (for example, our Prusa Enclosure) or by adding a draft shield around the object in PrusaSlicer.

Protect yourself when smoothing ASA in acetone

This type of post-processing gives the model a smooth, glossy finish that looks slightly like a vacuum-molded component. We addressed this topic in one of our older blog articles. You can learn more here. But safety first: Remember that Acetone is highly flammable and you work with it at your own risk. Do everything necessary to avoid direct contact and inhalation. Always work in well-ventilated areas, as far as possible from flammable objects and use protective equipment such as gloves and face protection (protective shield or protective glasses). Acetone vapors tend to be very prominent and may cause respiratory issues.

ASA may require occasional drying when stored improperly

We recommend storing ASA in a dry place or drying it before printing. To dry the filament, please follow the instructions in our article.