Hi!
My prints are to big!
I printed a test-cube (PLA) with 10mm length on all sides, cut with slic3r.
But the printed cube has in x and y direction a length of 10.3 mm. The height is exactly 10mm.
How can I solve this problem?
Thanks!
What layer height did you print?
The bigger the layer height, the more the outer perimeters will ooze out sideways.
0.2mm…
Check your belt tension for X and Y. (do not overtighten)
The 5mm belts have a good amount of slip.
It can help to reduce max jerk for X and Y.
It may also help to reduce the extrusion width.
The stock values for the steps/mm should be almost spot on.
[quote=“Mark.Washausen”]Hi!
My prints are to big!
I printed a test-cube (PLA) with 10mm length on all sides, cut with slic3r.
But the printed cube has in x and y direction a length of 10.3 mm. The height is exactly 10mm.
How can I solve this problem?
Thanks![/quote]
Whatever you do, don’t adjust the steps per mm settings to compensate. They should simply be derived from the characteristics of the stepper/drive and the belt pitch and pulley tooth count.
The size of the part is being affected by the extrusion width, but have to consider whether it’s actually a problem. Most of the time it’s simply not an issue unless parts have to fit together. In those cases, adjust the dimensions of the parts to be printed until you achieve the fit required.
I printed a bigger calibration-part with 50mm length & width.
Still the parts are 0.2mm to big. This shows that the problem is not caused by a faulty steps/mm-ratio.
The constant error of .2mm leads shows me that there is a constant error like a wrong wall thickness or something. I already reduced the extrusion width of perimeters in slic3r to 20 %, but no improvement.
Any suggestions?
Thanks so far!
Take a look at the x and y motor belt pulleys.
Do they rotate nicely or do they kind of “wobble” around the axes?
Are the belts tight enough?
Do you mean that the belt pulleys are not perfectly round and not concentric to the motor-axis?
I noticed this while assembling the printer.
Is there any improvement I can do to get rid of this wobbling?
Thanks!
Just print yourself spare ones. They can be easily found on thingiverse.
I did so myself and now have geatly improved accuracy.