I don't know about aluminum molds but I found with small parts I was casting that the bubbles would be eliminated by putting the mold in a pressure chamber around 100 psi. I also tried vacuum which works good for the silicon mold pours but not as good for the polyurethane.
Brian On 09/27/2013 10:27 AM, Erik Friesen wrote: > Has anyone here done much polyurethane resin pouring? I have been trying > to fine tune the process. Current process uses silicon moulds. > > #1. Does it work to use aluminum moulds? > > #2. Could it work to use high vacuum to eliminate air bubbles? I would > envision using some type of fill funnel and a pulling a full vacuum, then > opening the entrance to the funnel with some type of rod/oring seal. > > The current material I am using sets in about 10 minutes, the gel time is > around 50 seconds, so its all static mixed. > ------------------------------------------------------------------------------ > October Webinars: Code for Performance > Free Intel webinars can help you accelerate application performance. > Explore tips for MPI, OpenMP, advanced profiling, and more. Get the most from > the latest Intel processors and coprocessors. See abstracts and register > > http://pubads.g.doubleclick.net/gampad/clk?id=60133471&iu=/4140/ostg.clktrk > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users ------------------------------------------------------------------------------ October Webinars: Code for Performance Free Intel webinars can help you accelerate application performance. Explore tips for MPI, OpenMP, advanced profiling, and more. Get the most from the latest Intel processors and coprocessors. See abstracts and register > http://pubads.g.doubleclick.net/gampad/clk?id=60133471&iu=/4140/ostg.clktrk _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
