Review on Dremel 442 Carbon Steel Brush: Powerful Tool for Versatile Cleaning and Polishing by Bobby Porter
Great brush but mind the speed limit!
I've used them to derust some bottlenecks on some cast iron work and they've worked very well. They were more durable than some of the regular ones I've used. Be sure to follow manufacturer's recommendations and DO NOT use speeds over 15,000 RPM. A typical 120VAC variable speed Dremel will run at up to 35,000rpm, so we're talking about using the brush at just under half speed! 15,000 rpm will wear out prematurely and there is a risk of the bristles breaking at high speed.
- Satisfied so far
- I'll get back to you later
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