Jhead X Carriage mk1 for prusa mendel

new carriage for single or dual j head.
mount plate clamps in between the two halves.

I have designed it to be minimalist, and maximize Z axis height by mounting the j head on an aluminium plate between the heat block and the heat-sink. keeping heat transfer to the mount plate down by using a thermal insulating washer/gasket between the plate and heat block.
it is designed in auto cad, i have included STL and DWG files for your modifications
this is a work in progresss, comments and add