(not just for emergencies), this is how you create makeshift bits for a rotary tool. simple & fast:
here: a ´router´/´drill´ bit made out of a fishcan (tin)
USEFUL TOOLS (but, as always, 1000 trails lead to roma):
_ tin (here lid of a fishcan)
_ thin nail (or similar object, see below)
_ file (opt)
Step 1: Cut a Strip of Tin
i use a pair of a bit stronger scissors.
cut a strip about 3-4 cm by 3 cm (details depend on specific application - just play around)
Step 2: Roll It Up in a Coil
roll up the tin strip in a coil, the tighter the better
(to simplify the start: use a thin, stiff, round object, like a nail or a needle, etc, to begin wrapping the tin around.)
at a diameter of about 3 mm cut off the extra and close the coil
btw, this might come helpful in case the bit you create won´t fit your collet:
Step 3: Shape a Head
obviously, there a many way to form a head.
for simplicity: i opt for a flat, screw-driver-like head (another one, pointed, below)
all you need is to flatten down the tip of the coil (w/ a hammer etc)
optionally you could file/sharpen/groove etc the edges
Step 4: Done
insert the bit in the rotary-tool > secure it > ready for brain-surgery
any feedback is appreciated, & please ask if you got a question.
thanks to all.