Roger Linnell Posted January 31, 2007 Report Share Posted January 31, 2007 the other day, i stole some sharpies from the wife's pen stash, (she still don't know) and made a 6 cavity plaster mold, using the part of the pen that has sharpie written all over it. i pour in the plastic, let it cool till i see it start to shrink into the cavities, then turn the mold upside down, draining some plastic back into the pyrex, then right side up to cool. any body else try this? Quote Link to comment Share on other sites More sharing options...
Z-Reel Posted January 31, 2007 Report Share Posted January 31, 2007 I Never Have Poured Tubes, But I'm Thinking Of Trying It. Is Your Mold A 2 Piece Mold And You Just Fill The Cavity And Then Let The Plastic Drain Out To Make It Hollow? Or Do You Have A Rod Inside To Make It Hollow. Please Explain. Thanks Quote Link to comment Share on other sites More sharing options...
Roger Linnell Posted February 1, 2007 Author Report Share Posted February 1, 2007 it's a very simple one piece mold. you simply pour in the hot plastic, let it cool for ten seconds or so (depending on plastic temp, mold temp) then turn the mold upside down, drain the still hot, fluid plastic out of the mold for ten seconds or so, then reright the mold to cool. the outside of tubes comes out perfect every time. timing is everything as far as tube wall thickness goes. i've had some tubes come out half solid, with thick walls, but after a little experimenting, i've got it down. pros; you only have heat enough plastic to fill the cavities and the tubes exterior always comes out perfect. Quote Link to comment Share on other sites More sharing options...
