CompositesWorld
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31 CompositesWorld.com NEWS N E W S N S N E W S E N W S W Read this article online | short.compositesworld.com/AMTooling Read about large-format 3D printing online in "Additive Manufacturing: Can you print a car?" | short.compositesworld.com/3DPrintCar Read "3D Printing: Niche or next step to manufacturing on demand?" online | short.compositesworld.com/WIP3DPrint Read more online about Boeing's (HALE) Phantom Eye and Phantom Swift UAVs : "Boeing's Phantom Eye UAS promoted to experimental status" | short.compositesworld.com/PhantomEye "Boeing Phantom Swift selected for DARPA X-plane competition" | short.compositesworld.com/PhantomSwi Read more online about RapidCore in "New options for trapped tooling" | short.compositesworld.com/RapidCore 3D-Printed Tooling COMBINED LOADING SHEAR FIXTURE NO. WTF-NR-(CLS) V-NOTCHED RAIL SHEAR FIXTURE NO. WTF-NR ASTM D 7078 DR. DANIEL ADAMS, VICE-PRESIDENT STANDS BEHIND THE FIXTURES HE DEVELOPED… AND EVERY FIXTURE WE SELL. Expert consultation with Dr. Don and Dr. Dan • Over 40 fixtures in stock, ready to be shipped. • Email or call today to discuss your fixture and custom design needs. 2960 E. Millcreek Canyon Road Salt Lake City, UT 84109 Phone (801) 484.5055 Fax (801) 484.6008 email: wtf@wyomingtestfixtures.com www.wyomingtestfixtures.com Dr. Donald F. Adams President 50 years of Composite Testing Experience W T F yoming est ixtures INC. ANOTHER DR. ADAMS HAS JOINED US. TWO EXPERTS ARE BETTER THAN ONE (see Fig. 4, p. 25). Te test mandrel was coated with a solution based on the same binder system, but at a higher concen- tration, then hand-sanded and sprayed with a PVA mold release. Te mandrel then was flament-wound with a carbon fber towpreg overwrap and oven cured at 135°C for two hours. After cure, it was not only possible to wash away the mandrel with water but also to completely recover all the sand after the binder dissolved, reports Blacker, which then can be reused: "Te material is compatible with all resin systems — with the exception of phenolics, which give of moisture during cure — and can with- stand autoclave pressures." In addition to washout tooling, ExOne also prints prototype, master pattern and standalone layup tools, in a variety of sand and fne-grained metal mate- rials with tailorable CTE, to match process needs. "For layup tools or master patterns, we would recommend using one of our nonsoluble binders," adds Blacker. The only direction is up Boeing's Vander Wel stresses that young engineers recognize that toolmaking is no longer limited to subtractive methods, and that wider adoption of AM is on the horizon: "Tis technology is barely in its infancy today. We will have lower- cost and higher-strength materials, with embedded fbers, and larger build sizes — there are some really exciting possibilities coming for AM." Schniepp of Stratasys concludes, "Tere are real, long-term benefts to this technology for tooling. We're passionate about AM and its potential for changing the way that things are made." Sara Black is CW's technical editor and has served on the CW staf for 17 years. sara@compositesworld.com