Quote Originally Posted by routercnc View Post
OK. So a 'closed frame' is a 'fixed gantry' and an 'open frame' is like a conventional milling machine.

Good example of a 'closed frame' here, first picture in post#1
http://www.mycncuk.com/threads/9616-...d-that-be-Zeus

But there are not many fixed gantry machines on this forum, most are another type with a moving gantry to cut bigger pieces. But have a look through the build logs:
http://www.mycncuk.com/forums/253-DIY-Router-Build-Logs
Sorry I'm confused here, But i think the gantry is moving in the picture provided in the link! isn't it?