How to size the infill?
I recently made this pen holder
https://www.prusaprinters.org/prints/3258-wall-mounted-pen-holder
Where i made a solid shape and then using the prusaslicer i switched off the top layer and then using guesstimation set the infill to 6%
This is roughly the right size for most of the pens i own
I now want to take this a step further with a bit holder for an impact driver where the bits all have a 6.3mm hex drive
So instead of guessing is there a way of calculating what % will give me an infill that has 7mm hex shaped holes?
RE: How to size the infill?
Calculate the infill extrude width and solve for the resulting area for the fill pattern at percentage X. Easy to do with LINE infill, a touch more difficult with a HEX pattern.
A CAD tool is probably easiest to get precise part designs. SCAD, Fusion 360, etc.