I recently got into miniature printing using and msla printer in particular. I have struggled to print consistent flat surfaces on an angle using this technology. I have been fdm printing for 5 years, but msla printing is its own beast.

I can get a consistent base if I print flat onto the buildplate, but most bases become very difficult to remove from the buildplate at that point. I noticed in chitubox and lycheeslicer that the bases for their supports actually have a chamfer modelled in that makes removal quite. a bit easier.

These bases have a slight chamfer modelled in  so I can print them flat on my build surface and remove them without too much trouble in the end.