... fixed beam just above the bed. To knock the print off just drive the bed to run the print into the beam? Not sure if that work or not. Hi Andy, John, Thanks. A fixed beam won't work on the BIBO printer because the only bed movement available is the Z drive. The X and Y drives are on the extruder head in the top of the case. The bed drops as the work proceeds. Here is what I had in mind, if you can call it a mind: 2_231443_030000000.png A hinged weighted or sprung flap attached to the head and running against the bed. During printing of a single timber, it would be off to the left of the work. Then by driving the extruder head to the right, the timber would be bulldozed off the bed into the bottom of the case. There is plenty of space there. It's true that the stepper motors see a design load of near zero. The Z stepper sees only the geared-down weight of the bed assembly, and the X, ...