Problem with Z Axis ( only 1 of the 2 to stepper motor turning)

greenbeast

Hello everyone, i'm a newbie a 3d printing. I just finish putting together the machine 2 weeks ago.
I have a wilson ts reprap. look pretty much like this one but extruder is direct drive and not a gear.
http://4.bp.blogspot.com/-d9PT_Mv1CZg/UwlO0zUuwwI/AAAAAAAADVA/Qy1CI7Yf2N8/s1600/reprap+Wilson+diy+3d+printer.jpg
**The problem is that once i uploaded the latest firmware everything works fine besides THE Z AXIS.

THERE ONLY ONE OF THE TWO STEPPER MOTOR TURNING. And tested and the other motor is not dead.

***I was wondering HOW DO WE SYNC THE 2 Z STEPPER MOTORS.***

If anyone as a clue or ideas of what i could change in firmware, would be cool.

Thanks to the 3d community and most of all at the developpers of Of  REPETIER.

Im using a arduino mega 2560 with a RAMPS

P.S : Sorry english is not my mother tongue

Repetier

There are 2 solutions. Some copnnect both motors to the same driver, so there is nothing special to do. That is why RAMPS has 2 motor connectors soldered for z axis. The other solution is 2 drivers. In that case, you have to enable mirror z axis and select the stepper driver for the mirrored z axis.

Also make sure acceeration and speed are not too high and both motors can turn easily. If not alligned motors might block due to friction.

greenbeast

Thanks
             i"ll try that.