NightSky
Well-known member
An option for replacement brushes is to find a "close enough" brush and modify to fit. I had to do this to keep an old paper shredder running. It has been running w/o problem since then.I was recently searching for spare carbon brushes and a switch for my 25 year old made-in-Switzerland Bosch hammer drill. Bosch has both of these parts listed as discontinued. But I was able to find them online at a small power tool repair shop (Kauffman Family Tool Repair). They had 1 switch in stock, and 3 pair of carbon brushes. But I had no luck finding carbon brushes for my 45 year old Bosch router (model 90099M) which I believe was manufactured in the USA. That's not a problem, because I rarely use it these days.
The old brushes were worn down to nubs:

I found something close and modified. The as received new brush is on top and modified-to-fit brush on the bottom:

It will be interesting to hear opinions on this approach. I assumed that the conductivity of brushes is pretty much the same.








































