Slotted Base (Rounded Edge)
This is a multi functional base design.
Print at 0.1mm (or larger layers) without support for a base with a push through cover on the slot
Print as above for models with no tab and just glue to it
If you have a harder to balance delicate tab on your model you can print at .0.5 or less with support for a push into support on the slot hole.
I print these in batches of ten at 0.1mm layers on my Anet A8 and cut a more specific file when I need the support (slot infill)
for a beveled edge see
https://www.thingiverse.com/thing:3153568