was looking to add a nail or "spike" to the end of pole to help me pick up trash and leaves in the yard. threads fit standard US garden rake handle threads, designed to use a 2" roofing nail I had on hand. made 2 versions one with "Tight Tolerances" if the original seams to be a bit loose. the "original" is 5% scaled up on the "X,Y" plain from the "Tight Tolerances". a 3.1mm hole is in the center to accommodate the shaft of the nail, and a recess on the inside to accommodate the head of the nail.

used the "Rake Socket" from https://www.thingiverse.com/thing:4978345 as the base

I printed the mine in a layer height of .16mm .4mm nozzle 4 walls and 35% zigzag infill, 4 top and bottom layers