The general idea is sound, but blue laser diodes still cost hundreds of dollars last time I checked... And the 'battery hack' is infamous for being plain wrong.
I do like the idea of holding button cells together with magnets though.
The general idea is sound, but blue laser diodes still cost hundreds of dollars last time I checked... And the 'battery hack' is infamous for being plain wrong.
I do like the idea of holding button cells together with magnets though.
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