TOOLS AND MATERIALS
Callipers for measuring the finder’s bayonet connector and scissors for cutting out the template. If you’re using a soft plastic tube like a film can, you will need a craft knife. If you’re using a hard plastic tube then a multi-tool with a small milling bit is ideal.
A right-angled finder for an SLR camera. A tube, closed at one end, that’s a loose fit on the polarscope eyepiece – a 35mm film can or 36mm pipe end-cap may fit. The ‘loop’ side of some self-adhesive hook-and-loop fastener tape.
Card, electrician’s insulating tape, permanent marker, bench vice, safety goggles.