Tagger, I agree with you, I run mine wide open pretty much all of the time.
When through-drilling harder wood like birch or mahogany though (I through-drill on the lathe) its a lot easier at the slowest speed, the bits just get wayyyy too hot at wide open.
Also, when doing pen blanks, you have to slow down when sanding or it burns the wood, or melts the plastic if you are using one of those fancy plastic blanks.
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