I'm looking at ways to upsize a Prusa printer. These are the matters I am having to consider:

1. How to build and heat a heat bed of, say, 4' x 2' (for first model)

2. Should I use a flying gantry for the X and Z axes, or stay with a movable Y axis?

3. Should I stay with a belt drive system, or use screw drive?

4. Can I set up multiple gantries each with their own X and Z movements so that multiple prints of the same object can be made?

These are not insurmountable problems, but they indicate what might have to be determined when building a benchtop printer.

Old Man Emu