Hot Wire cutter tensioner with sevo

thingiverse

This supersedes https://www.thingiverse.com/thing:2485744 since it was found to be problematic to find good linear potentiometers. There are also some other things that have been improved. This uses the potentiometer from the servo itself that is moved outside its housing and joined with some wire instead. What's needed is a center puls for a servo to function. The easiest is to use an small ArDuino of some sort to generate that single square signal. Other ways are by building an 555 timer circuit to do it. Note that this has mounting holes that are made for my application and this might have to be changed to suit the cutter it is ment to be attached to. It is not for someone who doesn't have the means to tinker a bit. But then again, if you are building an own cnc you know what you're doing.