Engineering Humor

I'm not sure what that is.
It’s a homemade soldering gun using an old doorbell transformer I believe.

Similar in concept to this:

IMG_9887.jpeg
 
Great - until someone in know pulls the knob out of the knurled shaft and re-inserts it so she/he can blast . . .
 
Looks like speaker system control box - not connected to nearby AC-power-box
 
There is a small knob on the cookie can. Wires go in and wires go out. What is it speeding up or slowing down?
 
Back
Top