608 Bearing Idler - Adafruit Heatset Insert Press

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Three modifications I made to Adafruit's excellent heatset insert press: * Top roller modified to use a 608 bearing. This requires some very careful printing as the clearances are tight. there is a 2mm circular channel for the string/monofilament to run in. I did the 608 Pulley on a resin printer to get a better surface and tighter tolerances. You must also flip the direction of engagement for the fasteners used to hold the 608 Top Idler to the idler-coupler (inserts now are set into the Top Idler and fasteners go through the idler-coupler, into the 608 Top Idler; see photo). * Tri-Plate modified to use cap screws (SHCS) instead of flat head countersunk * Modified the counterweight to accept standard US quarters. Humorously enough, the weight of the quarters required is enough to buy the necessary mass of bearings I have also included a v-slot wheel for 625ZZ bearings in the spirit of complete disclosure, as that is what is shown in the attached images. I attempted to print these on my resin printer at 20µm layer height. They were functional to some extent, however a machined component will provide a much (much) better experience. If you found this Thing useful and you'd like to contribute to the development of future Things, you can buy me a coffee at [https://ko-fi.com/wcarver1](https://ko-fi.com/wcarver1)