MIRROR BACKING Optional cutout Optional cutout optional replacement back for smoother seams once build is done you will cut out the finished back and put this in its place score BOTTOM BACK FRONT CUTOUT CUTOUT CUTOUT Notch from inside Cut Cut Cut This is last This is last score here to here score here to here h e e b a u d t . t c s o e m t r m score here pencil hole optional cutouts first cut here for easiest assembly cut here for more attractive assembly TOP CUTOUT stop cut warning www.mrtesttubehead.com www.canexplore.com Mr Testtubehead Optics project Magic disappearing coin box please do not remove attribution Instructions on Youtube!