Re: Adventures in Converting my Precision Mathews Milling Machine to CNC
Originally Posted by
steelcogs
I've personally measured about .0015" of backlash on my X and Y and I believe I have an ArizonaVideo kit. (I bought it already converted so I can't remember 100% but it looks like his kit). Not sure whether or not it's double ballnut since I haven't taken it apart but I'd assume it's single.
I have a Masso controller for my mill and for some hardware/software issue they currently have backlash comp disabled and it's eating away at me since I have a tendency to be a perfectionist with this sort of stuff lol.
My older kits were single nuts and I re packed them for low backlash. .0015" would be a good result, better than some double nut kits. You have to remember that not all the backlash is from the ball nut. You will have a small amount from the end bearings, flex of the mounts, the coupler and stick slip. Getting under .001" is a bit hard even with a good tight ball nut.
I see that the other guy from CNCelements says his kit is the shortest which is it not. His Y mount is short because he copied my arrangement and the X too.They would be almost exactly the same. My Y mount is a single piece so it a bit harder to make. It looks like this.
Grizzly G0704 CNC Kit RM-16 C7 by arizonavideo | Photobucket
If your Y looks like that then its my kit.
Thanks guys
Dave
youtube videos of the G0704 under the name arizonavideo99