Quote Originally Posted by Tenson View Post
Thanks for your replies.

Yes I am using the parallel port of a Sony Vaio Pentium 4 laptop. One thing I notice is that I get an occasional delay when jogging if the wi-fi is active. So I disable it when running.
Ok well for a start you have rotating ballnuts and twin motors so you shouldn't be having any issues with loosing position due to lack of power.
My Gantry is much heavier than yours and I can cut what you where doing twice has fast you where and still not loose position.

I'm 99% sure your problem is coming from the Laptop and parallel port. For starters Mach3 doesn't suppport Laptop with PP for this very reason of it being unreliable with the pulses coming out of it.

If you where running an external Motion controller you wouldn't be having this problem. To be honest at this speed you probably wouldn't with the PP on a decent PC with good PP. But you certainly won't with External Controller. And you'd still be able to use the Laptop.

I'll lend you a USB Smooth stepper if you want to try one.! . . . . Fry it and you bought it thou.
If your going to buy one then buy Ethernet not USB.