MicroMark MicroLux Mini Mill support arm spring cover

thingiverse

I modelled this part at the exact dimensions taken from the original part (mine was cracked). On my printer, the inside diameter was a bit too small at 0.55mm undersized. The slot for the support arm was likewise too small. Depending on your printer and settings, you may need to scale this part up to fit. If you're unsure, you can always print the first few layers and measure or test fit them. For instance, I'd need to scale the part by about 102% to get it to fit. This part is not critcal, and the dimensions don't really matter. It just keeps dust and chips out of the spring, so you can always scale it up more if you don't want to spend any time cleaning up the print to get it to fit. Happy machining!