There are several free or open-source software solutions, the one I've used is CombineZP http://www.hadleyweb.pwp.blueyonder.co.uk/

As I recall that one is made up of 14-17 frames
Tim

Quote from: Brian RupnowThe cylinder is pretty simple. The slots which create the fins are the scary part. I know my small mill does a great job cutting .094" wide x 3/8" deep in aluminum. Probably it wouldn't grunt at cast iron. Steel though---Ah, Jeez, I'm not sure about that.
Quote from: JoI still feel one of the failings of the education system was that they never taught us how to wire a three pin plug

Quote from: JoDon't forget that without suitable qualifications in the UK you are not allowed to put a 13A plug on the end of a 240V mains lead.

Quote from: PStechPaulI'd like to get a small chunk of titanium, just to see what it looks and feels like, and maybe see how it machines, but I don't want to pay a lot for the dubious pleasure.
Quote from: Jo I hope you enjoyed it

Quote from: Admiral_dkI never seen an European product using M3.5 but encountered them in many US electronic products ....