In case its of interest,
One of the calibration processes I came up with last year but didn't mention,
was a quick but accurate way to align the tool holder positions without straining my neck !
a 12mm steel ball in where the nozzle would sit
a thin bit of material on that ( I'm using a bit of aluminium pcb material)
then an 8mm steel ball on top of that
in the setup routines, go to set the tool position..
adjust the head until it is on top of the 8mm ball and slightly compressing the spring
looking from the front, adjust the head position until the plate is level
looking from the side, adjust the head position until the plate is level
(http://i149.photobucket.com/albums/s48/Iamcabaged/IMG_1116.jpg)
This very clever, thanks for the information
Trev