Quote Originally Posted by irving2008 View Post
Interesting bit of construction.. I take it thats your machine minus its drive trains.

re belt drive, I can't help but feel there's going to be some difficulty maintaining accurate postioning with an open belt. What pitch are you thinking of?

The tutorial is here
Yes no drive trains yet, as I said in 1st post budget..the lack of spare cash - I've used threaded rod for cost and adjustment

The belts I have are 5mm pitch and pinion is 10 teeth then reduction before stepper motor, I think the change in direction will be the largest force on the motor.
Its still a blank canvas so I can go for some decent ballscrews if all else fails, but again it all comes back to cost and failiure is not an option

I'll try and get some pics of where i'm at with the drive