Hey DaBooBear,
I would have liked to know who said that and where, but you forgot the citation for this quotation (tip: you get the citation information by clicking on this button:)
Do you know you can use the “blockquote” functionality for displaying text that is a quotation? The “blockquote” button is the fifth icon in the top button bar of your composer window. It would make it look like this:
What I’ve learned so far… X values changed to A values are considered degree per minute rather than inches per minute. So if you have ordinary 200 +/- ipm feed speed set for any tool cutting around the rotating object it will cut VERY slow. You need to edit any tool used to cut around in the A direction to use a very high feed speed. A value that would be comparable to 200ipm on a 4" cylinder would be 4" x pi = 12.57" in 360 degrees. 200/12.57 = 15.91 revolutions per minute. 15.91 X 360 = 5728 , the IPM feed speed you’ll need to give X moves that become A moves around your rotary axis so they’ll seem like 200ipm cuts. There is a simple formula in there you could create to use block diameter, desired feed speed, and a multiplying value. My mind is not up to coming up with it tonight though.
– Source: Re: 4th axis on my probotix cnc by 4DThinker » Mon Oct 12, 2015 1:16 am