Technical uses for nail varnish.

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I recently mentioned a temperature sensitive nail varnish that could be used to detect hot components. This video is about that varnish and other ones that are useful for technical tasks. Here's a starter search on eBay for the colour changing gels. The most vivid red/yellow one will have a number like 5718. They sell them in multi-colour packs or as single colour bottles for a few dollars. You may find it useful to buy a small UV nail curing lamp too.
If you want to buy glow in the dark pigment then the keywords are Strontium Aluminate. Quite expensive for the proper stuff, but a little goes a long way.
Choose the green/yellow or green/blue colour for highest intensity.
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