Filament ASA - Model
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ASA can be considered a true successor to ABS. Compared to ABS, it’s UV stable, it doesn’t suffer from shrinking so badly and the fumes produced are much less noticeable. ASA 3D prints are durable, tough and suitable for a wide range of applications. The glass transition temperature is also higher compared to PLA and PETG, which gives objects printed from ASA an excellent temperature resistance - there are no signs of deformation up to temperatures near 93 ° C. Thanks to all these properties, ASA is especially suitable to print objects meant for long-time outside use.
However, you can still encounter some issues related to shrinking (warping) of the material - especially when printing larger models. Even with the heatbed set to 110 ° C, the prints can shrink and warp, causing them to detach from the print bed. However, the effects are much less severe compared to ABS. This issue can be eliminated by printing inside an enclosure or by adding a tall skirt around the object. More about this later.
• Great for outside use - UV stable
• High temperature resistance
• Detailed prints without a stringing effect
• Can be smoothed with acetone vapors
• Can be easily sanded / post-processed
• Great layer adhesion
• Soluble in acetone - can be used for gluing
• High impact and wear resistance
• Large models have a tendency to warp
• Produces odors during printing (less than ABS)
• Contains styrene
One of the biggest pros of ASA is its UV stability and the possibility to use acetone for processing - namely for smoothing out the surface or for gluing multiple ASA parts together. High temperature resistance is also a plus. For example, we use ASA to print the fan-shroud part for our 3D printers - this part creates an optimal airflow for cooling down the printed object.
Recommended print settings:
Nozzle: 255-265 ° C
Washer: 105 - 115 ° C
For sequins, we recommend a nozzle of 0.47 mm or larger.
Reference: Original Prusa SL1 kit