Problems with printing circles
Since I built my mk3s printer some time ago, printing circles has always been a problem. When I try to print round objects, they turn out not completely circular, rippled or have little blobs on them. I have checked the pulleys on the motor shafts, but after I re-tightened everything in the correct order, nothing changed.
Does anyone have a clue to solve this problem? I will add some pictures to show what's wrong.
RE: Problems with printing circles
RE: Problems with printing circles
I think I have found out what causes the problem. The x axis motor doesn't run completely smoothly. There is a point on the axis where the motor seems to stop rotating for a fraction of a second. Does this mean that the motor is malfunctioning? Or can I fix it? The belt tensions are fine.
RE: Problems with printing circles
Put thin oil on rods, every few rolls of filament you should clean rods, and then put oil on rods.
It is possible to tighten the bolt to hard on the extruder back side, search in forum for this.
RE: Problems with printing circles
Thanks for the reply 😃.
Do I have to use the grease provided with the printer? Or can I also use sunflower/olive oil?
RE: Problems with printing circles
Thin oil is needed, PTFE Oil should be in it.
And no olive oil, hope this is a joke!
RE: Problems with printing circles
No worries, I was going to use the oil provided with the printer.
I do have a lack of knowledge about 3D printers though, this is my first printer (prusa mk3s). But that's why I'm here, to ask questions.
I haven't finished one spool yet though, so is putting thin oil on the rods going to solve the problem? The y-axis motor does that weird thing at the same spot along the y-axis all the time, and the rest of the movements look perfectly fine.
The prints also suffer from ghosting. There are small rubber feet under the printer, are these good enough as vibration dampers? Or is it recommend with extensive ghosting to put something like foam under the feet as well? Or do I need to change the jerk/acceleration settings?
Some prints also have little blobs on them. I haven't changed the retraction length/speed or anything, so I don't now why it happens. It hasn't always been a problem, it's pretty recent. Does it have something to do with a dirty/eroded nozzle?
RE: Problems with printing circles
In an earlier comment I said the x-axis doesn't run completely smoothly. I've found out that the y-axis has the same problem but worse