Heat-Set Insert Press with Spring Return

Update 30NOV21:
BobbinMount_R01r changes the wall thickness from 2mm to 3mm and increased the holes for the 4mm screws to 4.4mm.
Button Head Screw for bobbin axle changes to M5x0.8x35

Update 21NOV21:
RollerPlate R5 changes the Wheel-to-Wheel dimension from 42.2mm to 41.5mm for better fit. Adjustment Slot mistakenly narrowed with plate width.

RollerPlate R6 changes the Wheel-to-Wheel dimension from to 40.5mm and sets the width of the adjustment slot to 2.5mm.

This remix replaces the pulley and counter weight system used in the adafruit and atmakers design with a constant force spring, providing a simpler solution.

A constant force spring maybe similar to what is in a tape measure. It always pulls with the same force, regardless of the pulled distance.

The Arm, Handle, and 2020 Mount are used as-is from the adafruit design. The Roller Plate is symetrical in design so the Handle can be mounted on either side of the tower, and even on the front or back of the Roller Pl