Thread: Might make one of these

hmm i do something similar with a water mortar.get an old car tube cut valve out and shove that through a hefty cork.filla 1.5litre bottle about 1/3full of water then bung the cork in.
sit it vertical and connect a bike pump or tyre inflator(compressor powered)and start pushinthe air in.Ive had bottles soar over the house roof at 80psi.ya get bloody soaked though. kids luv it.
another trick i tried was with my little claybird trap. cut a disc of pinex softboard and glues two used anglegrinder cutting discon -one each side.hmm right over the street on to neighbours front lawn that one! Tried an actual clay but it hit my big oak tree out front and burst -scared the shit out of the birds too!