Dremel Tool Speed

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asleepinTucson

New member
What speed (RPMs) do you use for polishing feed ramps and connectors with flitz or semichrome. Fastest 35000 rpm or slowest 5000 rpm or somewhere in between. Dremel recommends about 17000 rpms for metal polishing. Does it really make a difference??
 
More heat is generated with higher RPMs; and this can cause annealing, i.e. softening or case hardening of heat treated metal, depending on the metal and treatment. I can't tell you what RPMs to use but Dremel's recommedation sounds about right;)
 
The wrong speed will probably just burn up your wheel and maybe cause ripples in the surface of whatever your polishing. I don't think you would get it hot enough to hurt the temper in a part, that takes an awful lot more heat than you'd be able to generate with a cloth wheel on a relatively large steel part that would act as a heat sink.
 
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