Those pressurized airhorns in a can will forever be instant fun in the palm of your hand. But the annoying part is that that fun eventually runs out. This air-powered PVC foghorn? Not so much. Created ...

Instructables user [rog8811] was looking to build a fog horn that resembled hand-pumped units found on small ships in the early to mid 1900s. His budget was a bit limited, so he set off to build the ...