I’ve had a really fairly minor issue with my prints for a while now. Basically any time I print something that has an inner hole, the place where the nozzle starts and stops on that hole tends to have a tiny bit of extra material extruded. It doesn’t seem to do it so much on the outer perimiter. It generally does it every layer, at pretty much the exact same spots, one per hole usually, though occasionally for some reason I can’t explain, i’ll get two of them in some holes. The extruder itself is pretty much 100% dialed in, I extrude 100mm filliament, the filliament moves 100mm, the first layer height appears to be fairly good on average, and the correct thickness of the first layer does not seem to have an effect on the issue. A smaller hole is more likely to have the issue occur. Typically the little blobs will be stacked on top of eachother all the way up the hole in that same spot.
Any ideas what is going on or how to fix it? I’m thinking it has something to do with retraction on permiter start or stopIncreasing or decreasing the number of perimiters has no effect. Randomize starting points doesn’t seem to help, though typically it enters the inner perimiters in the same spot even with that on. Right now retraction is at 1mm, retract on layer change, and minimum travel after retraction 2mm. Wipe before retract is not enabled. I’m not even sure what that one does. Printing with a .5mm nozzle, standard .5mm settings from lulzbot, etc.
Am I on the right track, or is this something else entirely? potentially something related to the budaschnozzle 1.0 design itself that isn’t present in newer ones?
It’s a fairly minor issue and easy to clean up, but I’d like to get it working correctly if I can. Thanks!