hi ,black pipe is for dust extractor (hoover) i did put a small extractor fan on the first one i built but it didnt clear the dust fast enough and the filter clogged as well .theres a hole drilled the other side for air inlet and i just picked a hoover up at the boot fair ,works ok ,there is a small bulk head light inside to .make sure you line the cacinet with some sheet steel as the grit just makes mince meat of the wood else :lol: ,ile try and find some moor pics and post them tomorrowGwar72 said:Great detailed work done there..!! 8) I'm looking at making a blasting cabinet to and just wonder what the black pipe coming out from top right was for? Hoover extraction? I know you need a light and access for air pipe to come in but would be greatful for info. Cheers