View Full Version : Methods and apparatus for pre-planarizing cnc axises

02-23-2007, 10:17 PM
Hope to to have all the "great cnc builder" to post how they
pre-planarizing there axis in this post, pictures are very welcome

cheers to all there hard work

02-24-2007, 03:44 PM
To build my new (420X760X180 mm) fixed gantry mill, I used a very simple methode to pre-planarize my axcises. I let by a joiner's shop cut from 19mm thick board two jigs. One for axis X and one for axis Y. These jigs had the exact measurement between the respective 25 mm dia axises. Under these jigs i fixed with screw 50 mm wider boards. Then I cut rectangle-form holes in this assemblies for positioning the alu blocks of the teflon bearings. Then I fixed the axis roads with rubber band to the jig assembly.Because the CNC saw of the joiner's shop made an exact, paralell cut and because the under board of the jig assembly did not allow the axis roads to move or fall down, I got a perfect axis assembly to fix the roads to the frame. You can modify this apparatus so, that it can position the leadscrew too.
cheers G. Merkel
(Budapest, Hungary)

02-24-2007, 07:17 PM
I'll bite..

From the first reply, I asume 'pre-planarizing' means getting the ways lined up accurately?

(there's no such thing as a dumb question! :) )

02-25-2007, 03:01 PM
Yes, I anderstood so. It was a big problem of the newbies of our CNC community

02-26-2007, 10:35 PM
found a nice link