The bazooka shoots a ping pong ball in excess of 600 mph!!! Don’t have anyone stand
in front of it. Have a everyone stand far away. It will bounce off the wall it hits. It you
drop or damage the pipe in ANY way. Get a new pipe. Irregularities, nicks and cracks
can cause the pipe to implode and send pieces flying. Inspect the pipe before creating
the vacuum.
The initiation of the vacuum release is loud. Everyone should protect his or her ears.
When dealing with vast differences in pressure, there is always a risk of implosion. BE
SAFE. Always think of the students’ safety first. Keep the students far away from the
pipe. Use it at your own risk. ( I assume no responsibility for your use of this design
since I cannot oversee it’s safe use or construction. )