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Liquid Silicone Rubber 44 MoldMaking Technology November 2015 the bottle. However, it's also molded with an undercut that tends to keep the whole part stuck in the cavity. To keep the part on the core side for effective de-molding at the customer's plant, the tool incorporates a second undercut to mold the rib visible just above the bottom flange. Actual ejection is accom- plished via a stripper plate and a core-side air blower. This is why, for M.R. Mold, expertise is perhaps the most valuable currency. It's also a currency the shop is willing to spend freely, even beyond direct dealings with custom- ers. Claiming that M.R. Mold is one of a handful of North American shops that can do this tooling well, Anderson says Finnie and the rest of the leadership take the company's role as LSR ambassador quite seriously. Seriously enough that Finnie is an instructor in a silicone elastomers class at both Penn State University and the University of Wisconsin– Milwaukee. Although processors are the primary target, Anderson says all are encouraged to attend. "We'd rather have competitors doing it well than have a bunch of frustrated people out there who don't understand it," she says. "If we're going to keep manufacturing in the U.S., the industry needs to be educated." LEARN MORE From LSR stuffer boxes that ease job change-overs to its own robot and end-of-arm tooling, M.R. Mold provides customers with far more than a qualifed mold. Visit short.moldmakingtechnology.com/mrmold for more information. Partner and Ambassador Factors like those outlined here make LSR different enough and challenging enough that Finnie recommends sourcing molds only from manufacturers that specialize in this tooling. Granted, deep collaboration between toolmakers and molders is important throughout the industry. However, it's often even more critical for a material that is gaining in popularity even as it remains foreign to many. FOR MORE INFORMATION: M.R. Mold & Engineering / 714-996-5511 / mrmold.com Methods Machine Tools / 978-443-5388 / methodsmachine.com Sigma Plastic Services / 847-558-5600 / virtualmolding.us