Parts not true to size
Hi!
I just tried to print two print in place bearings in PLA ("Das Filament" black PLA). I used the 0.2mm structural, 4 perimeters, 100% infill and set 'external perimeters first' on. But both turned out with an external diameter of 21,8mm instead of 22mm, which resulted in a loose fit. Is this to be expected?
Thanks
RE: Parts not true to size
All printed plastic experience shrinkage after cooling. How much depends on the kind of plastic. PLA supposedly has the least amount as far as i know. If you require that amount of precision, you'll need to find online or with your own testing, how much % the shinkage is and you'll need to scale it in the slicer.
RE: Parts not true to size
Thank you for the reply, oh so this means it's normal and I have to adjust the scale myself then. I was worried something might have been wrong with my printer. I really didn't have a good start with the Core One, so it wouldn't have been surprising.
RE: Parts not true to size
Now you know how much shrinkage affects that particular print in that particular material, you can simply scale it up in the slicer by 22/21.8 = 100.9%
RE: Parts not true to size
Yes, I printed it at 101% and it no longer falls out thankfully.
RE: Parts not true to size
I've fallen down the dimensional accuracy rabbit hole. You might want to look at a califlower or a variant as it does many things at once, including skew. I'm going to work through the filaments i use a lot and set up some new profiles