Simple circle cutter

Since I couldn't find a circular cutter that suited my needs, I decided to make my own. The main goal was to create a circular cutter that would be used to cut circular holes as accurately as possible in technical materials such as rubber, certain types of insulation, and so on. I needed to to the exact circle into phone cover and I need to invent something for that, so this idea came to me. Before cutting, it is necessary to first make a 5 mm diameter hole (e.g., with a drill). Then, loosen the screw (red) and set the distance (the radius of the circle you want to cut). The cutter can be used to make holes from approximately 56 mm to 210 mm. What do you need do assemble the cutter:First of all print the parts from printprofileSecond – see the picture belowStep by step instructions for assembling the cutter: Insert the M3 threaded inserts with some heat source. Into the inner slider and RED NUT insert M5 nuts all the way down. Insert the completed inner slider into the cutter body