Makerfarm i3v 12" X Tilt Plate - for Dual Extruder Calibration

mounts overtop of the existing X back plate
the top middle hole is new and needs to be drilled in the existing back plate

add three long screws with some 6mm spacers and now you can make up to a 3 degree tilt in either direction to compensate for extruders that are slighly different lengths (up to .5mm if my calc is right)

I use 1/4-20 Lock nuts as spacers
25mm bolts for all three locations
plus some slightly oversized washers