Persistent warping with large ASA prints – what else can I try?
Hi everyone,
I’m having a recurring issue with warping when printing large objects using Prusament ASA on my Prusa printer MK4. Even though the printer is inside an enclosure (which I keep closed throughout the entire print), the corners of my prints consistently lift, ruining the geometry of the part.
My current setup:
Material: Prusament ASA.
Environment: Enclosed in a cabinet (no drafts).
Settings: *Nozzle: 260°C, Bed: 105°C.
Brim: 8 mm.
Draft Shield: Enabled.
Cooling: Disabled.
Surface: Satin sheet cleaned with IPA.
Despite these precautions, the internal stresses in the material are too high for large, flat parts, and the corners lift off the bed.
Do you have any proven tips for managing ASA shrinkage? Should I increase the brim size, or are there other adjustments I should consider?
Any advice would be greatly appreciated!
RE: Persistent warping with large ASA prints – what else can I try?
You could try letting the enclosure heat up a bit first before starting the print, so the chamber temperature is higher. If you're doing this with the heated bed, remember that it automatically shuts off after 30 mins of inactivity to save power.
You could also use some sort of bed adhesive, although I haven't tried this with ASA myself.
RE: Persistent warping with large ASA prints – what else can I try?
I tried and didn't help. Any ideas ?
RE: Persistent warping with large ASA prints – what else can I try?
Can you introduce stress relief features into your design? For a long straight wall, vertical "ribs" or "indents", or holes in the wall, can provide a way to relieve the stresses. Rounding vertical corners also appears to help, and avoiding chamfers/fillets on bottom edges helps too. Gyroid infill is less prone to warping, and less infill is better for this too.
All of these suggestions depend on your print requirements though. Not all prints can take advantage of these.
Prusa MK4 since Jan 2024, MK4S/MMU3 since Jan 2025, Printables: @MikeB_1505898
RE: Persistent warping with large ASA prints – what else can I try?
Maybe it will help i wanted print this model.