Parametric Screwdriver Handle

# Parametric screwdriver handle

Fully parametric SCAD model for classic screwdriver handle with a thumb indent and six edges. Made primarily to (hot)press-fit drive tips recovered from the broken screwdrivers.

### Input parameters with default values:

- $d=3; // central hole diameter
- $h=9; // central hole height
- $hex_hole=true; // set to true to make a central hole hexagonal
- $od=8; // handle outer diameter. Tested range: 4 - 32 mm
- $oh=50; // handle height. Should be at least double of outer diameter
- $edges=6; // number of edges