I'm guessing it's something pretty dumb and obvious, but when I print a something from Thingiverse/Printables/etc, I can never get it to be dimensionally accurate.
I don't need it to be stupidly accurate, but eg I printed a case for a RPI 3b. All the screw holes are slightly too small or wrong position making it useless.
I've done the following:
- Extruder rotation distance calibration
- Input shaper
- Pressure advance
I'm not sure what else to try?
@mhamzahkhan I had tremendous success with calibrating for geometric weirdness with the Califlower system. Here's a free alternative to it:
https://www.printables.com/model/778188-calistar-parametric-open-source-alternative-to-cal
@mhamzahkhan a pic would showing the issues probably be helpful, and knowing the material.
It sounds like you haven’t calibrated the extrusion multiplier which is big for whether things are oversized or undersized, but it won’t affect the center point location of a hole.
That would likely be a shrinkage compensation (common with ABS/ASA, much less common with other materials), but could also be skew.
If you print a simple calibration cube, how far off are the dimensions? Are they different in x and y?
Have you read the Ellis guide? Going through that guide should get a usable profile for just about any printer and any filament.
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