On Saturday 21 November 2009, Jeshua Lacock wrote: >On Nov 21, 2009, at 4:40 AM, Gene Heskett wrote: >> And it took 20 minutes to reach that state? Wow! And I assume the >> titanium >> was suitably 'cast' once the reaction was used up & things cooled. >> What does >> one use for a casting mold/crucible material at those sorts of temps? > >P.S. > >One of the beauties of casting with aluminothermic reactions is there >is no crucible used (or furnace)! > >You plug the sprue (entry) going to the mold cavity with a thin sheet >of metal (that is melted once the molten metal reaches it), and put >the chemical on top. The slag melts to the top and the metal drains >out into the mold....
Kewl! I take it the magic is in knowing how much you need to fill the mold. :) Thanks Jeshua. >Best, > >Jeshua Lacock >Founder/Programmer >3DTOPO Incorporated ><http://3DTOPO.com> >Phone: 208.462.4171 -- Cheers, Gene "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) The NRA is offering FREE Associate memberships to anyone who wants them. <https://www.nrahq.org/nrabonus/accept-membership.asp> Worth seeing? Yes, but not worth going to see. ------------------------------------------------------------------------------ Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
