Designed this hat stretcher for an undersized hat I had. I've looked at other uploaded designs, and wanted to make a version that's a bit simpler to print and assemble.

Designed to work with the following hardware:

• 1/4in carriage bolt
• 1/4in nut
• 1/4in washer (optional)

All the hardware is assembled after the part has been printed. The nut should go inside the turn knob.