officebitch

OfficeB again. We're using pla, all layers at .3mm. We thought maybe the bubbling was happening because the infill wasn't high enuf--the last layer not sticking to the layer beneath--so we pushed infill to 80% from 40%, and the problem got worse. Looked like the fan was blowing up the top layer, and sure enuf, turns out most of the bubbling is caused by the fan running at 100%. 1st we reduced the fan to 50%, which helped some, then to 20%, which helped a lot more. Then put infill back at 50%, and turned off the fan--manually--on the top layer, which got the best results. Anyone had similar problems with too much fan on the last layer, causing the bubbling shown in the pics above?

Hello Friends, I keep running into the problem of the last layer above the my infill will bubble/warp/look like crap. I was wondering if anyone has had this problem and found a good solution. Of all the forums I've read it seems that there is a "sweet spot" combo of temperature and fill speed, but I cant find it. Thanks Everyone