Take a piece of suitably-sized drill rod and harden the end and grind a knife edge and you've got a useful and safe retractable mini-knife for opening stubborn packages, clipping coupons, whatever.
Drill out the button used to expose/hide the knife blade, glue in a small magnet, and you've got an always-in-your-pocket for spotting those big-box store Chinese brass screws as brass-plated steel.
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Regards, Marv
Smart phones are to people what laser pointers are to cats
Homo sapiens is a goal, not a definition
Andyt (Mar 21, 2020), baja (Mar 21, 2020), DIYer (Feb 3, 2017), emu roo (Nov 24, 2025), Jon (Jan 28, 2018), Moby Duck (Jan 26, 2018), NortonDommi (Jan 26, 2018), RetiredFAE (Jul 18, 2023), Toolmaker51 (Feb 3, 2017)
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