printed the donuts using your files and a key widget but having problems with the finish at the top layer =( I observed the same problem... but only when using concentric infill. I was able to prevent this problem by only using one layer of concetric infill and the other infill layers are set to re...
I'm printing ABS with "ABS-Juice" on a glass plate. That works really well for me. Printing Temperature 230°C, bed temperature 110°C. Simply put some ABS Filament parts (or remains of a print) in some acetone in an acetone proof, lockable container. Wait some hours until everything is diss...
Yep, you should reduce the spacing because the 0.3mm can cause especially on curves that the filament doesn't stick the the support material and then it choses the "shortest way" which is a straight line