Hi Thomas,

My choice would be to reduce the backlash mechanically.

For a test program, you could try something like this where the central line is composed of 3 separate segments approached from alternate directions – if it is stepped, then that would show the backlash on the Y axis.

Tweakie.


f100
g21
g0 z2
g0 y0 x0
g1 Z-0.5
g1 X10
g0 Z2
g0 y75 x0
g1 Z-0.5
g1 X10
g0 Z2
g0 y150 x0
g1 Z-0.5
g1 X10
g0 Z2
g0 y75
g1 Z-0.5
g1 X20
g0 Z2
g0 y0 x10
g1 Z-0.5
g1 X20
g0 Z2
g0 y75
g1 Z-0.5
g1 X30
g0 Z2
g0 y0 x0
m30
%


yes - it is stepped. Now for my Allen key...

thanks for the code.. I will have more questions in 30 mins I am sure!

Thomas