Gear-themed drawer pull knob using 1/4 inch heat-set insert

I designed this drawer pull knob for the clockmaker's bench that I'm making. It has a gear design on the front, and is designed to use a 1/4-20 1/4 inch heat-set insert so that it can screw onto a 1/4-20 threaded bolt.
My video for how to install the heat-set inserts is at https://youtu.be/mgcgukodNNc
The Heat-Set Inserts for plastic, for a bolt with 1/4-20 threads: https://www.mcmaster.com/94459a370
The matching 1 3/4 inch bolts to fit my bench drawers: https://www.mcmaster.com/91772a548
The parts are SAE rather than Metric because 1/4 inch is a very common bolt diameter where I live.

DrawerPullKnob.stl is the STL file to print. Print without supports. Print as oriented in the STL file: with its face upward. Print with 2 mm walls so that the heat-set insert will have enough wall to melt.
I've successfully printed this design in PolyLite PLA on my Lulzbot Mini printer, slicing it using Cura Lulzbot Edition set to High Detail (0.180 mm) resolution.
DrawerPullKnob.FCStd is the FreeCAD design file. I designed the basic outline of the knob to never overhang more than 45°, so that the print doesn't require supports. I then added the hole for the heat-set insert and the hole for the melted plastic to flow into (otherwise the melted plastic will fill up the bolt hole). I then added a gear design (Part Design / Involute gear...) and engraved it into the top. A nice article on designing for and assembling heat-set inserts is at https://hackaday.com/2019/02/28/threading-3d-printed-parts-how-to-use-heat-set-inserts/ I used a soldering iron with a heat-insert tip heated to 437 F (225 C).