• Are you looking for a coupon code to buy my software? You can get one from lots of 3rd party sites but they won't work. My software never goes on sale and has never been discounted. The only coupon codes that are given is when I give a club presentation and I offer a discount to the attendees. Other than that, everyone pays the same price.

Having trouble with Southwest segment length

There are many workable approaches to centering rings. Everyone has their favorite, usually obtained by trial and error. Use whatever works!
 
Any technique that aligns one layer to the previous layer is subject to cumulative error. The best way to do it is to align each layer to the 1st layer. A line laser set up with the line perpendicular to the axis of rotation allows you to do that.
 
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