What pulleys and timing belts do I buy from sdp-si???

Hi all, I need to knock up a timing belt reduction. I was thinking of
around a 6:1 ratio. ie 10 tooth and 60 tooth pulley. I would like to
use a 3/4" belt.

How are those plastic pulleys with the aluminium inserts? are they
okay for cnc use?

I want to buy from www.sdp-si.com. I had sent them an email telling
them what I have do and what I need for my plasma table.

http://plasmatable.bravehost.com/

and

http://www.cnczone.com/forums/showthread.php?t=4900

They replied back that they do not select parts for people and that I
would need to get an engineer to do that. Pathetic support for
customers. So anyway. I need to find some one to get me the part
numbers from the sdp-si.com website for me to make a belt drive.


the centre distance is to be 250mm.

6:1 ratio

3/4" belt

1/2" drive shaft internal diameter

plastic ok

Allloy or aluminum prefered

Steel ok.

Cheers

Peter
Australia