Problems running G-code

[milgo]

I am new to the cnc scene. I recently finished building my cnc taig machine, powered by a xylotex board and 240oz/in steppers. Today I configured everything,port pins, motor tuning etc. and the first tests went well. Using mach1 I can jog all axis, but I hit problems when I try to get it to run from code. I exported the nc .iso file from deskproto and imported it into mach1. When I run the sequence all I can here is the motors groaning and the spindles twitch. I got it to start but then the motors kept locking up after a few lines and then they didnt move at all. I have fiddled with everything I can think of, but nothing has any effect. Can anyone think what might be causing this?
Thanks.

[Alan T.]

What software are you using to generate the gcode and are you using the Mach1/2 Post for that sw package?

[milgo]

I included that in the post above I am using mach1 and creating toolpaths in deskproto.

[Alan T.]

Sorry, my bad, did not read the post completely. I just have not seen a Mach1/2 Post for DeakProto. I thought it was a Post problem.

[milgo]

Turns out it was partly deskprotos fault. In the milling machine settings it was set to 30mm/min travel. That coupled with the fact I had my spr wrong made it really slow! In the end I worked out that I had a 20tpi lead screw, so in 1/8th step mode I needed 32000 steps per inch I just let the program caluclate the mm's.