Timing belt instead of rack!

[BillTodd]

Have you used it? and do you Know accurate is it?

I made it in pixelanium and, as designed, has negative backlash thus improving any machine that it is fitted to by 1000%

The chain is normal, but the sprocket isn't a normal profile because the chain doesn't wrap around it. The profile shown is only a rough approximation.

Bill

[ptjw7uk]

Nice idea on the chain but my original thought was to kill 2 birds with one chain so to speak in that the pulley running on the belt would effectively act as a bearing. You would still neeed another lower down to give some rigidity but the 2 belts per side increases the complexity and I was after simplicity mind you I realise that simplicity and accuracy dont go hand in hand.
Mind you ball screws are just not cheap enough.
Peter