Parts used for this project (small version): 1"x 1"x 1/2" T Fitting 1" x 1/2" Adapter 1" Plug 6" x 1/2" PVC Pipe Freezer Bag Long Funnel (found at auto parts stores) Parts for large horn ...

Instructables user [rog8811] was looking to build a fog horn that resembled hand-pumped ... He added a few more pieces of PVC piping to enhance the output, giving him the results you see in ...