You won't have enough with just one pair...Originally Posted by triticale
If you build the system with moving X and fixed Y axis, then these are great for the X. (That's exactly what I did)
For the Y I used "the modified drawer slide" concept.
Below is a link to a picture of a test axis, it just gives an idea of how simple it can be.
http://users.skynet.be/sky50985/CNC/testaxis.jpg
The leadscrew is standard M10 threaded rod, the nut is home-made of nylon and the stepper directly coupled. On the opposite side of the stepper is a single bearing mounted on the frame and fixed with 2 nuts on the leadscrew.
I used a standard Accuride drawer slide and modified it, today I found these on the net:
http://www.cabinetparts.com/cgi-loca...24887696.24551
This is a US? based distributor but found several all over the globe, even in little Belgium here.
2 of these make a perfect Y axis.
I don't fully understand what you mean by 30 degrees off and what the advantages are. Think I have a bit of a clue, could you draw somehing up?
To obtain precise contruction, I did it as follows:
Screw one of the slides to the base plate, then mount the moving plate on the fixed slide and on the floating one, using slightly oversized holes then move the plate to one side and fix the screw on that side, the same for the other side.
The plate should now move freely over the entire lenght and all screws can be fitted.
Hope you understand what I mean, as said I'm from Belgium and English is only third language here.........(at least when I went to school a long time ago)