Gigi

No problem with AA core. The purge make a big bubble to the buildplate then rise and everything ok. BUT... BB core make a bubble then rise a bit and wait too much and another bubble is growing and stick to the nozzle then is carried out to the print zone. I think that for BB core rising a little bit will be an option ?

When printing is ok, the corner of the buildplate you see in camera view is not moving. But when something is going wrong wou will see a movement up and down because the printhead is pushing on the print.

Hair spray. But spray glass outside the Ultimaker.

For me an useful role of camera. When something is wrong the build plate is moving up and down.

AA 0.4 nozzle Smallest detail 0.5 mm (diameter) Piece dimensions 17.34mm x 4.32mm Thickness 0.62 mm Playing with : flow %, line widht, wall thickness. Layer height was 0.02 Ultimaker 3 Cura 2.4 PLA (ultimaker)

Manual leveling only one time. Because print cores are heated up before autoleveling, sometimes small pieces of filament are dropping out of nozzle causing that error. I have Ultimaker 3 Cura 2.4

Railroad model HO scale. printed in 0.060 profile. But for other small details a smaller profile is needed.