Quote Originally Posted by Jonathan View Post
Might be too late but this site is very cheap for timing belts, lots of pulleys too:

http://www.fish4parts.co.uk/Mechanic...-Belts.109413/
Hmmmm, they be very expensive I'm afraid! I paid £3.01 each for T5 x 15 x 14 teeth pulleys and they're £7.76 each on fish4parts. The 42 tooth was £6.94 on bearing station and a whopping £16.69 on fish4parts. Need I say more?

Quote Originally Posted by Jonathan View Post
My Vertex HV6 rotary table works well as a 4th axis. I just made a mount for a 1nm motor on to it from a piece of 3" aluminum bar - not difficult to do at all. Wear on the worm drive might be a problem though.
I've only got a 3 axis kit at the mo, but the facility is there to add a 4th. I was also a bit concerned about gear wear...that is why I mentioned using an industrial gearbox in a previous post. Rotary table and 4th axis is going on the back burner for now as I have to do!

You didn't mention the performance of your standard lead screws. What was accuracy like and how much backlash compensation did you have to set in EMC?