Post #4261512
2026-07-30 20:54 UTC
Renee has a favorite knife but it's hard to distinguish from the others when stored in the knife rack. I decided to put a nice red end on the handle using dip rubber, aka liquid electrical tape. It's often used to put a grippy rubber overcoat on a tool handle, but works well for smaller things too, like the knob of a violin bow so it's not got sharp corners.
The problem is that the stuff is in a tube and always separates, like peanut butter in a jar, so I did what any normal person would do.
Replies (2)
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@ftp_alun@infosec.exchange 2026-07-31 14:56
@robpike@cosocial.ca Now make it into a product, and sell it - for peanut butter uses, obviously.
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@robpike@cosocial.ca 2026-07-30 20:56
It's hard to shake the tube successfully, so I connected a function generator to a vibration plate and taped the tube to the plate. Then turned up the voltage until I got some motion, switched to a pulse signal to maximize shaking (sin is very smooth), then turned up the frequency until I got a good resonance (high Q). Success: after a few minutes the tube delivered perfect toluene-loaded red rubber that did the perfect job. For @reneefrench@mastodon.art with love.