Hey #3dprinting experts. I was making a little side bracket to hold some eyepieces for a telescope project, and it looks like it will work fine, but there was a small pair of defects in the first layers, which were highly localized, spoiling an otherwise very good first couple of layers. I've seen this a couple of times lately with both PETG and ABS prints. Anyone have any suggestions on what might be causing it?
It could be grease (fingerprints) on the buildplate. Maybe clean it with lukewarm water and dishwashing soap and do a test on that part of the buildplate. Elmers Purple gluestick is good for extra first layer adhesion.