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Home Page Banner--› Contact Info Logo--› The Pens Level 1, Introduction to the pens The Pens The difference between the B5 and D6 Where to buy Level 2, Details heft balance tungsten new light technology tip BOMA 8888 Soviet underground testing X-750 X-15 graphic-->NASA X-15 photo archive at Dreyden space shuttle re-entry tiles JOM article on how the WTC towers collapsed titanium the Guggenhein in Bilboa, Spain patent 2,906,654 for 6/4 Ti TIFF plug-in to view patent office images machining, finishing, how the pens are made foam Poron foam manufacturer tech sheets refills Level 3, Depths of Details sintering tungsten wire forming Level Four design intent the BOMAcoin