b'size of a door, a little bit bigger ac- bridge-type machines, one a Kita- less you have to touch up.tually, Donlin said. mura and the other an Eumach. In addition, high-speed milling re-The company is considering ac- High-speed milling eliminates aduces the amount of sinker EDMing quiring a laser texturing machine,lot of manual polishing and fittingthats required to make molds, but he noted, but was quick to switchbecause the small cuts impart aabout 90% of the molds still require from duplicating machines to CNCfine surface finish, Donlin said. Hesome burning, Donlin said. Sinker machines in the 1980s. That was aadded that its critical that the cav- EDMing requires Comet to design huge jump.ity and core sides properly seal to- an electrode, buy the graphite, pro-Donlin added that Comet ad- gether when a mold closes. Thegram the electrode, machine the opted high-speed milling in 1997better you do your machining, theelectrode, set up the EDM and burn and continues to purchase new ma-chines to rapidly remove metal with small DOCs whenever it retires an old, tired machine or needs to in- YOUR DRILL PRESS SPECIALISTScrease capacity to better serve cus-tomers. The companys latest ac-quisitions include two large vertical Michael Murphy performs deep-hole drilling on a Tarus gundrill.5 %OFFLIST PRICE FOR ALL FLOOR DRILL MODELSthru 4/30/2020CLAUSING 20 INDUSTRIAL DRILLS SET THE INDUSTRY STANDARDAll the castings, components and assembly are done by AmericanWorkers. They are designed and built to meet virtually any heavy-duty drilling requirement20 DRILL FEATURESTwo Speed in\x1fnitely variable speeds4 column with 1/2 thick wall forfrom 150 to 2000 rpm and 200 to 1300great rigidity, accuracyrpm or 300 to 2000 rpmPrecision ground oil trough table that Drilling capacity of 1 in cast iron, can handle large parts and \x1fxtures.75 in mild steel EVS Series in\x1fnitely variable speeds Heavy-duty precision head with allfrom 50 to 2000 rpmbearing surfaces are precision boredCNC Series in\x1fnitely programmable simultaneously for exact alignment variable speeds from 50 to 2000 rpm3 MT spindle with 6-1/2 travel, with programamble feed rates2-1/2 diameter quill and micrometer depth stopContact Clausing for Additional ModelsServing the Machine Tool Industry Since 1911.www.clausing-industrial.com | Call 800.323.0972 for the Clausing Dealer nearest youctemag.com/cteguide.com41Moldmaking.indd 41 2/14/20 3:38 PM'