wet wooden glass molds to be used when artist blowing glass piece

art artisan blowing blown blowpipe bowl burnt coal craft crimps design detail form gaffer glass glassblower glassblowing glassforming glassmaking glassmith glowing heat hot house industrial industry jacks mold molding molds molten nippers old open paddles parchoffi pipe punty residue retro shape shaping soot steam studio taglia tinsnips tool unpainted used vintage wood wooden workshop yokes