Warping at corners
Hey!
Does anyone happen to know what is causing this weird corner warping on my prints?I'm using a Prusa Mini with standard PLA. The settings are mostly standard, except the bottom layer infill overlap is at 35% and infill is at 20%. I tried to round off the 90°-corners with 3mm radii but the crinkles remained. This printer used to work just fine on features like this.I also tried to increasing the perimeter count, also with no effect.
Thanks in advance!
The imediate cause of warping is thermal contraction of long runs of filament so first protect your printer from drafts. (and beware aircon outlets)
Lowered adhesion also contributes so make sure the print sheet is scrupulously clean and consider adding brim or mouse-ears.
Directed stresses from long runs of infill are another source - grid is one of the worst; I would try cubic fill, failing that gyroid, or better 'though it will shake the printer - 3D Honeycomb.
With larger prints than yours it can pay to insert voids in the prints to break the run, or 'decorative' slots to make expansion breaks -----^----- like this; they may need to be staggered to reduce weakpoints.
Cheerio,