12th Sonic Tweaks

Minor modifictions that let it work better for me. Added a 7mm hole in the emitter to allow the insertion of an LED. In the process of building this, managed to break the tabs on the center part, so remixed the tabs thicker. The original lower third of the screwdriver came out about a 1mm wall which seemed to flimsy, so I thickened it up. 2 mm wall. Then needed to print the rings and things that go on it a skotch larger to fit. I kept the original interior dimension in case it was to be used with the original batter pack, in which case that would add additional needed strength. Lastly, since I did not find a readily available source for an original battery pack, I modified a design for a lithium disc hold to take 2 of the CR1632s that I found in my stash of batteries. Good selection, because it is a reasonable capacity and is about the largest disc that would easily fit as a stacked pair inserted sideways.
Modified a great design to hold the batteries and fit the tube. This one:
h