Some modeling based on the drawing at Lisa variant concept by A2
kinematic model
I observed a sizable volume at the top that is never intruded by the arms or head. Might be a good spot to install build filament handling.
Arm length in the animated model gives a large horizontal build span, bug enough to not fit out if a single object filled it. The largest cylinder that fits the build volume will fit out between the lead screws as modeled, without much room to spare.
kinematic model
I observed a sizable volume at the top that is never intruded by the arms or head. Might be a good spot to install build filament handling.
Arm length in the animated model gives a large horizontal build span, bug enough to not fit out if a single object filled it. The largest cylinder that fits the build volume will fit out between the lead screws as modeled, without much room to spare.