As a modeler for 3D prints, I often need parts to fit together.

It would be great to add offset/clearance to boolean diff operation as some engineering software has.

Example:

You have a cylinder of diameter 10mm and you want to use it as a cut tool into another block.

You use diff boolean with cylinder as a tool and add 0,15mm offset/clearance.

It would result in a cutout cylinder of diameter 10,3mm in the block.

Therefore, if you print out those parts, they will fit together thanks to the clearance.