Coos Cues
Coos Cues
Now I'm really confused. Didn't you just say boring isn't the right way to do it? You have now described pretty much exactly what I said I do. It's been my experience that I get the best results in wood with a thou clearance. less than that you're getting on a press fit of the end of the gun drill into the wood. Did I miss something? BTW I have tried a centered bushing out of delrin held in my tool holder as there has been previous discussion of this and my results were not good compared to boring a pilot hole. Maybe gun drilling steel is a different animal and we are just making due with wood with a tool not really designed for the job?A bored hole the finish diameter of your gun drill and about half the length of your gun drill tip in the end of the butt is all you need. There is no need for expensive or exotic special tooling. Bore the hole, guide gun drill in it and begin with low rpm and light pressure so as not to instigate wobble or runout. Once the gun drill tip is fully engaged and doing what it's designed to do you can increase rpms. No need to make it any harder than that.