Calibrating my BotMaker:
Stringing of the bowden extruder - check
40mm long brigde - check
Support material - check
Blobs on the perimeters - not Check!!for the love of god they don´t go away!!
I’ve heard blobs on the perimeter at x and y jerk, I’ve turned mine down to 5mm/second it still happens, so I have nothing to suggest but am interested in the results.
There is a few possibilities. these are what have caused this for me in the past.
1 Your filament has water in it. If it is PLA it is quite likely, drying it could re move the blobs. The reason this can be caused by water is that filament absorbs water from the air, when the water goes through the hot end it boils and causes extra expansion. The bubble effectively looks like a blob. Solution, dry the filament
2: your printer is buffering and pausing in one location during the print. This causes problems as the ooze from the hotend makes the blobs. The only way i know to fix this is to print from an SD card.
I was just printing a test right now.The blobs occur on the spots where it changes layers or where it starts making the perimeters.
Next I will try to use wipe and external perimeter first, and some fine tweaks on the filament and retraction.
I don’t think it is from the PLA because it is doing across different suppliers, fresh from the packaging.
lets see how things progress…
have to try from sd to see if it makes any difference.
Look for a retract on layer change, and ‘stagger layer changes’/vase mode.
@Mike_Miller I have the retract on layer change on, but the second one I don´t know about!
Is it the spiral vase option?
Spiral vase only works well if you are printing 1 object and only printing 1 perimeter layer. it is a slic3r setting. it turns each layer into incremental layers so it never actually steps the z axis, but slowly lifts over 1 perimeter
Good to know!