My first attempt to print in ABS has been an unmitigated disaster, and I could do with some advice before I try again.
I've been trying to print a Bean Hopper Extension for Melitta Barista TS Smart coffee machine, but every time the layers separate, usually at or near a corner.
My first attempt had it lifting from the bed before a few layers had completed. When I tried it with a thin brim on the outside, it stuck down for a while, but eventually started lifting away from the bed. When I tried it with a raft, it got further, but then the print detached itself from the raft at one corner. My final attempt used a wider brim on both inside and outside, and it managed to get even further through the print. None of the brim had detached from the bed, but then I noticed layers higher up pulling apart, and when I eventually cancelled the print, I saw it had started separating earlier and managed to recover in later layers.
At this point I gave up and printed it in PLA, first time, but I would like to understand what I can do to improve my chances of printing this next time.
Also, I plan to redesign this with the outer wall extending straight up to the level of the bottom of the notch, with a flat top in which I intend to add a channel for a rubber seal. Will widening of part of the model cause more problems for an ABS print, or will it help strengthen it and prevent it separating as before?
I'm using an Ender 3 V2 with a heated bed, using Prit-stik as my bed glue.