interested in buying a coring knife. How much power and RPM's do I need?
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I run it about 1000 rpm unless it's a really large bowl. I know everyone says you need a lot of horsepower but it depends on how patient you are. If you don't mind taking light cuts you could probably get buy with 3/4 horse. For normal coring I would say 1 1/2 or bigger would be better.
What coreing tool are you talking about? When I got my McNaughton all I had was my Ricon mini.It has a 12" swing and is 1/2 hp,but I cored quite a few bowls from it,the largest being around 11" when finished.I have the Nova 1624 1 1/2 hp that I do any coreing on.I usually core at about 800 rpm,but with the tailstock against the piece.