Shape3d plans & slices for plan printing

Hi All,

New member here and long time lurker.

I made my 1st EPS board, and really want to start a hollow wooden board. Ive pulled together a design in Shape 3d, and plan on printing full scale templates to transfer to sheets. However, Im struggling adding additional slices into the design so that I can print off in full scale.

I can add slices into the design view - but when I go to "plan" i only have x 3 slices - see the picture. Anyone got any ideas?

Thanks in advance!

P.