This door knob is designed to attached with a 8-32 x 2.5" standard machine bold and fender washer. Capture an 8-32 nut in the print by pausing the print at layer 45 (assuming a .2mm layer height), insert nut, and resume print.
Printed with 2 walls, .2mm layer height, 10% gyroid fill.
The author remixed this model.
This model takes the nice Viking Knot pattern from the original file, doubles its height and places it on a knob of my design. I needed a knob that was a little larger than the original file and with a larger base to cover where previous knobs had scratched the door finish.