|Review by Holbs||posted 03-16-2014 02:34 PM||1782 views||0 times favorited||8 comments|
I was in need to make 6” and 6 1/4” circles for my dust collection HVAC blast gates and support holders. My Microfence circular router jig CAN go as low as 6”, but I had to install a Bosch router adapter which changes the minimum diameter to 7”. I’ve reviewed other circle cutters and decided on the Grizzly because it looks more “stout” and there are zero reviews I could find so … a crap shoot :) I could of went with a hole saw but that is a fixed diameter for any future smaller holes, leaves a very rough uneven cut, and the price tags are over $60 (at least, the Milwaukee’s were). Suggested RPM is 500 maximum. Well, my 10” delta drill press can only go to 650. I went to work on 1/2” maple ply. There were no directions that came with this cutter. Luckily, after my circle cutter research I knew to cut down 1/2 way then flip over (so 1/4” on one side then 1/4” on other side). End result was a perfectly precisioned 6 1/4” hole. Some burnt wood smoke and blackness on the blade cutter along with some stutters as the cutter got caught and took about 10 minutes to finish the hole (I kept stopping every once in awhile to put water on the cutter to cool it down). I’ll put that to cutting maple ply and at a higher RPM. Hopefully, some work on my diamond sharpening stones will make the cutter 100% again.