Projection

projectcnc · Post by **projectcnc** » Thu Sep 25, 2008 9:23 pm

Another phenomenon I've noticed is a small step at the base of any projections I machine. I feel certain this would have to be a chipped bit but I want to toss it out for discussion to make sure. (I have new bits coming)

LesNewell · Post by **LesNewell** » Fri Sep 26, 2008 7:22 am

Are you using a roughing pass then a finishing pass? If so is the finishing pass the same depth?. If this is the result of one cut then as you say, it is probably a damaged cutter.

projectcnc · Post by **projectcnc** » Fri Sep 26, 2008 10:11 am

LesNewell wrote:Are you using a roughing pass then a finishing pass? If so is the finishing pass the same depth?. If this is the result of one cut then as you say, it is probably a damaged cutter.

It was probably a stupid question. I looked the bit over with the closest thing I have to a loupe (a magnifying glass) and could see the bit was chipped.

I hadn't thought of a second pass. I've been less than pleased with the swirls. A second pass and a new bit. Wow! That'll be nice.

projectcnc · Post by **projectcnc** » Tue Oct 14, 2008 1:30 am

projectcnc wrote:It was probably a stupid question. I looked the bit over with the closest thing I have to a loupe (a magnifying glass) and could see the bit was chipped.

This really was a stupid question. Only a broken bit could produce such a cut. And it was, and it did. I have new bits now and nothing but excellent, smooth results.