I made this post on a 3d printing facebook page but I didn't get any comments, I figured people here with the same printer may have some good insight into my problem Here is what I posted, copy and pasted. Day 1 Looking for a little help. Im printing black (3dxtech) ASA at 245* extruder and 100* bed temps in an enclosure. Printer is a Robo R1+ using mattercontrol software and matterslice. I finally managed to get the print to stick to the bed and now I'm trying to get the finish more consistent. The one side gets a lot of bubbles/blobs/zits in it whereas the front and other side are smooth. I can comment on additional settings if need be. I did a print with a test piece with a spiral vase setting applied which doesn't allow the extruder to cross over itself and it printed beautifully, except it didn't have any infill and was extremely weak. The attached pictures sitting on the steel table top are from this print. Day 2 I think I've found out that the blobbing is caused by where the extruder starts and stops. I've read that this can be fixed by defining the start and stop points at each layer, my question is how can I do this in mattercontrol? Day 3 I've changed some setting in mattercontrol, one of the bigger improvements was switching to printing the perimeters first. Its better but still showing the bumps on the one side. I may try switching from matterslice to curaslice or slic3r in matter control to see if it gets any better. Hoping someone sees this and can give a little insight. The attached pictures sitting on the vice are from this print. Notice the "front" and "right sides look great, but the "left" side is still full of blobs. Day 4 I switched the slice engine to cura slice and it was much worse. I may try slic3r tonight.