Circuitmess Wacky Robot Marv Instructions Manual page 18

MARV BUILD GUIDE
To get two smaller casings from the kit,
you'll need to break one large acrylic piece.
But please, be super careful when
doing this to make sure you don't
damage the parts you need.
After breaking it, you'll end up with two separate pieces
of acrylic casings. If you find there's any acrylic in the
holes of the casings, just gently push it out.