Wire Threader & Long Drill Bit

Here's a couple of handy tools for getting those track feeds through thick Styrofoam mountains.  They're made from a couple of coat hangers.

The long drill bit is a piece of coat hanger with the end flattened out with a hammer on a piece of steel (anvil, bench vise, etc).  I then cut off the end in a v-shape with a pair of wire cutters.  The wire cutters leave a jagged edge on the cutting end that will zip through thick Styrofoam or plaster mountains.  

The other problem we face with these deep holes is getting wire through them.  This is where the wire threader comes into play.  It's made from another coat hanger with the end broadly flattened out.  I centre-punch the middle of the flat piece so that my drill bit won't wander and drill a 1/16" hole in the centre.  I clean up the burrs on the drill hole and shape the end with a mill file so that it is rounded almost in the shape of the eye of a needle (well, almost like one).

The drill bit and wire threader work in tandem.  Once the hole is drilled, I clean out the hole with the wire threader.  When the hole is clear, I push the threader through the hole and thread the end of the wire (strip off a bit of insulation) through the eye of the threader.  Wrapping the bare wire around itself keeps the wire on the threader.  I then pull the threader and wire back down (or up) the hole until it appears on the other side.

Kinda fancy, eh!?