Quote Originally Posted by devmonkey View Post
I needed an HTD5 pulley for a project, this was a bit odd as it needed to be fixed to a spinning bearing housing rather than to a shaft so I decided to make one on the machine. I used the cambam trochoidal plugin for the roughing allowing the entire part to be milled with a 3mm endmill, took a bit longer but meant no tool change. Part was cut dry with air to clear chips, worked out really well.
Well done, nice bit of work that. BTW, how did you hold it whilst machining? Pieces like that where the finished part doesn't have a lot of thickness I always find a bit of a challenge to hold down rigid.