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Step 2Create the support arm
First I put little pieces of electrical tape over the visible metal bits of the battery holder to prevent shorts from our armature wire. Don't use too much tape because it'll conflict with the hot glue we use later. (You want to apply hot glue to the plastic, not to the tape.) Skip this step if you're using a less cheap battery case.
Take the armature wire and bend it around 3 1/3 sides of the battery case. It should generally be snug, but leave a small (1/8") gap along the "inside back". That's the side that will be closest to your chest and closest to your shoulder. (This is where an image is worth a thousand words.) That gap is where you'll secure the adjustable strap, so make sure your Velcro strap will fit through it. Note that this one is a right handed light. For a left handed one wrap the wire the other way.
When you're happy with it, hot glue it in place. Make sure you don't put any glue on the part where the strap will go. And don't get any glue inside or you'll have a hard time getting batteries in.
Take the armature wire and bend it around 3 1/3 sides of the battery case. It should generally be snug, but leave a small (1/8") gap along the "inside back". That's the side that will be closest to your chest and closest to your shoulder. (This is where an image is worth a thousand words.) That gap is where you'll secure the adjustable strap, so make sure your Velcro strap will fit through it. Note that this one is a right handed light. For a left handed one wrap the wire the other way.
When you're happy with it, hot glue it in place. Make sure you don't put any glue on the part where the strap will go. And don't get any glue inside or you'll have a hard time getting batteries in.
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