I have two parts that I'm printing that need to be joined later with self-tapping screws after I drill a pilot hole in the 'base' piece so that the 'cover' piece can be attached. I would love to be able to print a small circular or rectangular 100% infill region where there screws will go, but keep the infill for the rest of the part very low (like 10%; weight is a big factor). I cannot think of a way to do this. Is it even possible with Simplify3D (or any slicer)?
Thanks!
-M.