Just got my MINI yesterday and I’m having a blast with it. I’d just like to confirm my results with what I should expect.
I’m going to be using the mini to create a lot of cases for arduino based stuff. Those boards use M3 screws to hold the board to the case. The engineers handbook recommends that for an M3 screw, the thru hole should be 2.5mm before tapping. To test accuracy, I had the mini make a boss with a 2.5mm ID. Once printed, I used gauge pins to measure the results. The ID/hole diameter of the part came in at 1.4mm.
Thinking it might just be small dimensions that are difficult, I printed another bearing I had which has an ID of 4.1mm. When I measured it with a gauge pin, the resulting part came in at 3.24mm. Working with SLA machines, I know that holes will come in a bit tight, but I wanted to see if I should expect more/less out of the machine for these types of details.
As for the run mode I’m using HIPS, Cura quickprint, FINE detail. See the results below:
Should my ID’s be closer to my solid dimensions or am I getting expected results for this machine? Should I be using the HIPS profiles you guys provide for expert mode? Should I be buying a smaller nozzle diameter?