Finished project. No planned enhancements at this point.

Inoculating Loop Flamer.

This was an unexpected requirement. Normally an open flame from a Bunsen burner is used for sterilization for inoculating loops. Sometimes some other sources of flames are used yet as our space is the library we did not want to use open fire. There is expensive alternative with an infrared mini oven that costs several hundred $ but it was too expensive. So we built an electric device that warms the loops to several hundred degrees until is sterile.
Build information
We all know wood burning toys use a red wire and we also know that nichrome is also used in heaters so it can glow red without issues. The question was if it heats red the loop part too. So here's a fast test that shows it does. Look at the loop at the bottom.

So we put it in a metal box from an old switch and we added a 3d printed support for the handle and a clasp from a fuse holder. The power is a laptop power supply that delivers 18.5 Volts up to 5.5 Amperes.
You hook the loop in the spring, insert the handle (snap) in the 3d printed support and the metal between the handle and wire in the fuse holder. Power up and sometimes you have to wiggle the handle so the electric contact is made.
It melted the cheapo power switch we put in so we had to replace it. The 3d design for the handle, switch and power jack are
Here