I modified the Ultihandle by Silvius:
- Increased thickness by 5 mm (now 20 mm).
- Reduced the size of the "cutouts".
- Removed the lettering
- Changed the square screw openings to round
- Added elliptical curves to the top and bottom
I printed 1.2 mm wall and 40% fill. This may be overkill, but didn't want the handle to break. The model must be positioned diagonally on the print bed since the overall length is 223 mm (8.78 in).
The original 16 mm long screws are not long enough - they should be at least 20 mm.