On 04/13/2017 12:44 PM, Todd Zuercher wrote: > > But I'm cutting out a 2ft x 3ft window. It would be silly to pocket fill > that entire thing. Yes, that is something I do all the time. I call it trepanning, and I have programs to do that, also. However, there's no way to avoid the first cut at each level being a full-width (plowing) cut, and that is the most difficult part of the job. I do use either brushed-on cutting oil for a one-off, or flood coolant when doing a lot of that type of work. I've been doing instrument panels in various aluminum alloys with a 1/8" 4-flute solid carbide cutter. The coolant makes a HUGE difference. > It seems I'm making good progress using the majic O-flute bit and a > trochoidal path. > > Excellent, glad you found a combination of things that makes it work.
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