Hook to hang stuff from on the garage shelves from Bunnings or where ever These have lasted me over a year. Printed versions in PLA or PETG on X1C & Ender3 both are fine for hanging tools. Working on shelves with holes of about 12mm upper hole, 7mm lower hole and 1mm metal thickness.
The filet is the curve added to the edge. The “pinch” is the cut made around the base. What I’m saying is you don’t need to cut all around the peg. You only need need two notches cut on each side of the peg (you can filet them is you feel like it) It would add strength to the peg on the load bearing axis while retaining the ability to latch into the hole of the rail.
oh I see what your saying. Yeah, that’s a good idea.