Quote Originally Posted by curious aardvark View Post
you can't run a 20x20. The 15cm depth is the physical max. If you physicaly move the carriage to the front of the case - the extruder nozzles are bang on the edge of the plate. There's no wiggle room there.

But you could run a 30x15 plate with no problem. Like i said you just need to print right with right and left with left.
Short of actually making the case bigger and moving the guide rails - there's no other way to do it.
Well you could refit it with a single extruder assembly I suppose.
Which would give you the 30x15 for the one head. Make life slightly easier.
But as the design stands you'd need a total rebuild you get any more y or z capacity.

End stops don't need to be moved.

But the hard part is always going to be getting the software to use the larger build plate.
You are right, Flashforge machines are crap for upgrading, short from pulling it apart and adding longer rods, longer belts etc.

If you want to tinker you are better off getting a prusa or similar.