I’ve scaled up a planter that I designed which has a pattern consisting of piping which overhangs the section below it because I alternated the size of the piping then rotated discs. The smaller planter works fine but since scaling it up I’ve noticed the overhang walls are not holding their position which has caused sagging and some loose threads to appear. I’ve tried a couple of setting to see if I can get it to work but haven’t had success yet. I think it may be an difficult issue to fix since its a cantilever with a curved edge that doesn’t really allow the printer to use tension for the bridging but figured Id ask here in case anyone had any ideas.
So far Ive tried standard PLA settings, then added added thick bridges, first with a bridge flow of .9 and then .8. When I switched to .8 I also adjusted the bridge speed from 50 mm/s to 30/s based on a recommendation in a different thread. All other settings are default. I’m printing on the cool plate. I think my next step would be to adjust the bridge direction, which might change how the overhangs look on some (but not all of them since its circular and you cant set the bridge angle radially) since I think what is happening is the walls are sagging and then the bridge is getting printed into air.
I realize as I type up this post that I probably should just add a slight slope to the model itself but I’m still gonna post this in case there are any valuable insights to be had.