Total noob about to embark on a build.

[JAZZCNC]

Misleading, you don't want tension in a CNC Router. On a CNC mill or lathe it's quite the opposite - tensioning the ballscrews is necessary if you want the best possible accuracy, however you can't do this on a CNC Router as in general the frames are nowhere near strong enough. Applying tension to the screw would just flex the frame.

Don't start Jonathan he's building a router not a Lathe or milling machine.!!

Also tensioning the ballscrew is a completley differant thing to tensioning the frame. The frame on a CNC mill or Lathe would be built in such a manner to accomadate this ballscrew tensioning but not impart tension else where on the frame so it does still apply.!!:tup:

[routercnc]

Hi Wal,

You might want to look at Florin's machine which he posted a while back. I wouldn't copy the Z axis with the unsupported rails and long Z plate overhang, but there are some other good features.

http://www.mycncuk.com/forums/showth...ing-CNC-router