NOTE: BE VERY CAREFULL TESTING THIS !
git clone git://git.linuxcnc.org/git/emc2.git emc2-dev
cd emc2-dev git checkout v2.4.6
upload:emc2.4.6_rack_toolchanger.patch
patch -p1 < emc2.4.6_rack_toolchanger.patch
cd src ./autogen.sh ./configure make make install-menus sudo make setuid
TOOL_CHANGER_TYPE = 1 type 1 for rack tool changer, 0 for default type
TOOL_CHANGE_POSITION = 712.92 5.25 46
position of first tool in rack
TOOL_SLOT_DELTA = 56 0 0
position delta of next tool in rack
TOOL_HOLDER_CLEAR = 712.2 100 100
safe position of tool before/after tool change