I am just building first printer -- OrdBot Hadron
I got a mBot Mk 7 extruder
http://www.mbot3d.com/collections/toolh ... p-printersI turned it 90 deg to fit on the bracket better,
that required drilling a new hole on the steel mounting plate.
Also drilled the Hadron plate to accept mounting holes on Mk 7
It comes with a driver board - that I will not need with RAMPS electronics.
I do wish there was some type of safety cut off electronics for overtemp.
I'll let you know how it works when I get it squirting hot plastic.
Keep on buildin'
Ray