make a paper box, that fits inside the pocket? Most probably, some kind of waxed or silicone paper would be required. On Tue, Feb 14, 2012 at 05:53, Dwayne Reid wrote: > Good day to all. > > Not sure if this is [EE] or [OT] - trying for [EE]. > > I'm looking for an inexpensive sheet material that I can use for > epoxy molds. I have a product that is an epoxy blob about 1.5" x > 1.1" by 0.5" thick. I need to find a faster way of making these epoxy > blobs. > > What I'm currently using is a piece of acrylic with a couple of dozen > pockets milled in it (all the way through). I cover the back side > with tape (for a seal), place my modules in the proper spots, then > pour epoxy and bake in an oven. The problem occurs when we go to > remove the cured epoxy blobs from the form - its time consuming even > though we swabbed the sides of the mold with mold-release compound. > > What I'd like to explore is using a sacrificial material that I can > break away from the epoxy blobs after the epoxy has cured. This > material must be capable of withstanding the about 100C cure > temperature in the oven. > > I have considered using 1/2" MDF - it machines quickly on a CNC > router and 1/2" thick material breaks fairly easily. But - I'd like > to find something a little more fragile if possible. > > I expect to have to make several thousand of these units. > > Is anyone aware of an inexpensive sheet material that machines > easily, can withstand 100C for an hour or so and breaks easily when I > need to snap these modules out of the form? > > I'm considering some form of high-density foam board but don't really > have any idea of what to look for . > > Suggestions gratefully accepted. > > Many thanks! > > dwayne > > -- > Dwayne Reid > Trinity Electronics Systems Ltd Edmonton, AB, CANADA > (780) 489-3199 voice (780) 487-6397 fax > www.trinity-electronics.com > Custom Electronics Design and Manufacturing > > -- > http://www.piclist.com PIC/SX FAQ & list archive > View/change your membership options at > http://mailman.mit.edu/mailman/listinfo/piclist > --=20 KPL --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .