PCB Circle-Drilling and Milling Aide

Original creator description

The purpose of this thing is to enable someone with a table-drill (be it a metal one or something like a Dremel on a stand) to drill holes along a circular curve, without having to adjust the x/y coordinates after every hole. Instead, you only need to drill a 5mm hole in the center-point of the circle (I actually drill 4.5mm and then hone it to 5mm), stick it on the 5mm parallel pin on the PCB drilling aide, and position the drill above one of the holes. Drill the first one, turn the PCB until the next hole lines up with the drill, drill the next one and so on. If the Hole in the PCB is honed to 5H7 it fits tightly on the pin (precision-ground parallel pin with dia. 5m6, 15mm long), there's... This hosted file keeps creator credit and license details.