will the circuit of the smoke detector work with small 5V fan?
Depends how big the fire extinguisher is, in my experience they're quite large, so I'd go to AE and they could help remove it. Curious, how did it get inside your body?
Thread a pipe into a hole in a cold tank, and it fits fairly tight. Now start the water heating in the tank. The metal of the tank expands. This means the hole the pipe fit in expands too. Now the fit is not so tight as before. And the pressure has increased. Now the water trickles out from between the threads of the pipe. One can tighten the inlet or the output pipe.
