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I have put some thought into just how to have the dowel axis along the x. It would have to be turned by the y motor. That is, the dowel would have to roll left and right following the carriage...

I watched the videos. There is no problem to do that. The cutting only went as deep as the center hole. As long as the difference in radius of the dowel and the hole was less that 0.8" for carving or...

Can I carve something like this? I think this is what cestout was talking about. Boggles my mind if you want to carve the backs of the ropes through the gaps.

I am not sure we are thinking about the same thing. Here is a simple way to ask the question: what kind of crankshafts can I carve? How far of center can I go with the crank and still be able to...

I am not quite sure what you mean. If you mean three spiral strands with gaps between them, I think it is possible. The dowel diameter would have to be fairly small so the bit could reach the back of...

Kevin has emailed me asking how the jig measures the dowel. In case anyone else was wondering I thought I would post the response I gave him.

The jig has two positions, it slides back 1.5 inches...

Thanks, Ed. That means a lot to me. One, because you are the true inventor of the concept and two, because I was worried that you may have been offended by my using the concept. I will never make and...

Ok, here is a picture. You cannot see all of the parts. I am hesitant to post the jig details. I do not want to get anybody upset. I am not trying to compete with Ed's rotary jig or damage his sales....

I just carved the twisted square column. This is the first test of my prototype rotary jig. The dowel was 2 inch diameter and 6 inches long. The jig will hold pretty well any diameter or length...

I was thinking about the conversion problem from real world 3D to rotary jig. I wondered what type of surface would carve to be a square. I plotted a twisted square column in a math program called...