Hi,
Just finished building my first machine:Probotix 3-Axis sidestep driver kit
Steppers are Chinese from ebay, rated at 263oz 2.8amp
I have a 24v 16A power supply.
I used the basic design from buildyourcnc, because I only have hand tools.
My PC is 1.8Ghz 512Mb RAM, Windows XP SP3
I'm using Mach3. Full stepping.
So now the problem; While manually moving the motors around in Mach 3 motor tuning, they frequently stop movement and make a loud buzzing sound. Especially my X axis, it almost has no movement at all. I'm using 30 ipm for testing, pretty slow, nothing changes if I adjust it down. Moving the Y axis back and forth I noticed that it happens pretty consistently in one location on the rail, leading me to believe that the motors are really struggling to move the machine and there is just more resistance there. Is it possible that these motors are too weak? Before I mounted the motors I was able to turn the leadscrew by hand but they are sort of stiff I guess.
This has been driving me nuts for 2 days, nothing I try seems to make any difference. Any help would be much appreciated.