By Tom Parker

Sometimes it costs more to buy it than to make it from the money itself.

Photography by Tom Parker

Combination Lock

SIMPLE COMBINATION LOCKS ARE based on a shaft with rotating disks. I made this one out of 5 quarters, 2 half-dollars, and a penny (plus an odd assortment of scrap metal, nuts, and bolts). It looks complicated but it’s actually very simple.

For illustration purposes, I made the drawer front out of "-thick clear acrylic (A) so you can see both inside and outside the drawer.

The drawer lock works like this: ...

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