Step 28Pièce de résistance!
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To protect the internals from the elements, the bike light requires some kind of rigid, triangular-shaped piece on the front. What could be more appropriate than a Tazmanian Devil enameled house key? After a few minutes work with the grinding wheel, the head of the key was shaped to fit the opening in the clip. Also picture here is some hardware required to attach the handlebar mount. The neoprene washer may be used to help waterproof the opening in the front of the clip. For some positionability of the light, use salvaged bicycle brake pad washers. They are curved to allow a bit of a swivel motion before tightening.