hi i am a complete newbie at setting up a cnc. i have ran one for work for the past 6 years but never set up a new one.

what i have is a home made plasma table 5x5.
i run the mach 3 software
the problem i have is my x and y axis step motors run very jerky and make grinding noises and not even close distance its supposed to.
all three motors are nema 23
x and y are belt driven to i believe a 3 to 1 reduction i have not counted the teeth yet.
any help would be appreciated