Things I've Built
Image projection live organisms microscope display
Shone wall projection light thru a recessed well microscope slide to present real-time images of swimming protozoans to a group. Demonstrated organisms’ unusual response to an applied electrolytic current across the well of liquid.
Pinpointing wand
Attached a narrow commercial nugget coil to a commercial metal detector with a 2 position switch, enabling the small coil coupled to the main detector box to be used as a pinpointer.
Bfo metal detector
Built it from salvaged military wrecks per a magazine article.
Lutetium
Mike Maluk