I am currently making 30 large lumber trucks that require over 200 - 5 inch wheels. Pine and oak that I used for the wheels. I cut on both sides and 99% of the plugs are spontaneously ejected after each cut. The only complaint was that it could have been a lot smoother for what I was doing, but of course that's not the intended use of this design, so I've made peace with that shortcoming. If you are looking for a SUPER FAST hole saw, you MUST try it.
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