Can I lower my miter saw rpm’s successfully with a VARIAC?
Question by Teddy: Can I lower my miter saw rpm’s successfully with a VARIAC?
I have a 14-amp Ryobi miter saw and a 25-amp VARIAC. My problem is that I wish to use a metal cutting blade that is rated for 5500 rpm and that is just about was the saw puts out no-load. I want to be safe, of course, and the blade gets better performance around 3000 rpms from what the manufacturer says. Question is, can I just use my VARIAC to lower the speed of the saw (without hurting it, of course) and, if so, would the rpm be proportional to the voltage i.e. 60 volts=approximately 2700 rpm give or take…
Best answer:
Answer by Derik
I guess that’s a rheostat of some kind. I’d only be worried about your Ryobi’s motor taking a beating. It might heat up because it’s come out of the balance designed into it between it’s effort and resistance. Maybe just feels for excessive heat on a few test runs. I would guess that it would do fine on soft woods but hard woods might cause some problems. just a guess though.
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