There comes a sad time when all great and trusty tools in the workshop begin to die from overuse.
Murphy’s Law states that this must occur at the most inopportune time. In the case of our ever faithful hand held Dremel® MultiPro rotary drill, this breakdown just happened to be in the middle of an important PCB shaping, drilling and cutting project. Our rotary drilling tool was mounted as a router on top of a mini CNC machine at the time.
When the problem started, the tool motor suddenly became erratic and there were problems with the variable speed control (VSC) switch. Then, the sliding switch no longer provided any motor speed control what-so-ever. It only provided power ON at full speed – a heat blasting 35,000rpm …. and a silent OFF. This wasn’t at all ideal for our CNC cutting project where cutter heat control was important.
So what was our obvious DIY reaction to this? Find the cause and fix the tool ourselves of course!
You can find photos showing how the internals of our Dremel® MultiPro tool looked here. We have also provided a step-by-step dialogue on how the tool was taken apart; how the faulty part was found and replaced AND importantly, how the hand held drill was successfully put back together again!
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