ASA problem Larger parts
IMG_3710
Please, why is this happening? I didn't print part 1 because it started to separate from the board. I understand, maybe the base was not properly degreased. I had part 2 printed and added a hem. It didn't come off. But it bent the entire base! So the 4 corners are finished again! Part 3 is also deformed in the corners and scored. It happens when filling in the last 3-4 layers of the surface. Until then, it prints nicely without errors. It happens with flat and thick models..
RE: ASA problem Larger parts
Common issue with ASA in large prints.
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Chuck H
3D Printer Review Blog
RE: ASA problem Larger parts
A print that large requires an adhesive and carefully managed chamber temperatures. Also, perhaps increase the number of perimeters to 3 or 4 and use a low density gyroid infill (like 10%).
RE: ASA problem Larger parts
I also suggest enabling the draft shield and maybe adjusting it's size and distance, maybe a brim too. ASA tends to warp badly with variable temperatures in the chamber and large objects.
Regards,
Mark
RE:
Large ASA parts are tough on the Core One because the passively heated chamber can't reach a high enough ambient temperature to keep upper layers warm, leading to differential cooling and warping. The bed does heat the chamber, but it's not the same as active chamber heating.
@mark's idea of a draft shield might help keep temperature gradients stable around the part and reduce warping.