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moldmakingtechnology.com 39 filling properly, so a 3-inch-diameter piece of porous steel was installed in the mold, which improved fill and reduced cycle time from 56 seconds to 44 seconds. • Production of a car's center console was yield- ing a 45-percent scrap rate. The majority of the scrap was due to a burn in the cup holder. By retrofitting a piece of porous metal venting steel in the problem area, the burn was eliminated, and the scrap rate (due to other issues) was reduced to 9 percent (see Figures 3, 4 and 5). • A dishwasher filter screen showed so much stress from being packed out on a 750-ton press (the mold was originally scheduled for a 500-ton press, but it wouldn't fill in this press) that it sprung out of shape when it came into contact with hot water. After retrofitting with porous metal buttons, the molds were able to be installed back on the 500-ton press and pro- duced stress-free parts. The list of examples could go on, from thin- walled medical molds that would not fill using conventionally designed vents to small automo- Powerful 5-axis HPC/HSC machining centers. Unsurpassed application diversity. For complex workpieces. Mill-turn parts up to diameter 1,300 mm, profiles up to 30,000 mm in length, structural parts up to 4,000 x 1,000 and 7,000 x 2,000 mm, large volume parts up to 47,000 x 7,000 mm. Customised solutions for titanium, steel, aluminium and composite machining. Horizontal machining centers, profile machining centers, high rail Gantry machining centers, universal 5 axis bridge mills. H A N DT M A N N M AC H I N I N G C E N T E R S – AS DIVERSE AS YOUR APPLICATIONS Handtmann A-Punkt Automation GmbH www.handtmann.de Handtmann CNC Technologies, Inc. Scrap can be reduced after installing an enhanced venting material. FIGURE 4