2020-2-27 · Make a blower tube. Take a 1" x 12" (2.5 x 30 cm) steel pipe and screw on a 1" PVC coupling at one end. Once you have attached the coupling to the steel pipe, slide a 1" x 24" (2.5 x 60 cm) PVC pipe into the smooth end of the coupling. The coupling should have a threaded end for the steel pipe and a smooth end for the PVC pipe.