On Friday 06 December 2013 13:57:04 Florian Rist did opine: > Hi David > > > iv'e try'd copper and even with 600w + it's difficult to even mark it > > Yes, 600W is not enough. That's why a q-switched laser with short pulses > is needed. Pulse peek energy on my laser is 25 kW, that's still not > enough, the one on the mentioned laser was about 1 MW. This instantly > turns the coper into plasma. Its not melting not vaporising it, it tuns > a very thin layer into plasma within less than a ns. This process is > very controlled an would allow to remove the 35 mµ of coper in multiple > paths without heating the FR4 and without hardly removing any of it. > > cu > Flo
Humm, thats beginning to sound like non-exportable munitions. Not to mention eyeball wreckers just from the reflections off the surrounding walls. :( Bad idea for someone not well versed in the tech. 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) Genes Web page <http://geneslinuxbox.net:6309/gene> Everything is possible. Pass the word. -- Rita Mae Brown, "Six of One" A pen in the hand of this president is far more dangerous than 200 million guns in the hands of law-abiding citizens. ------------------------------------------------------------------------------ Sponsored by Intel(R) XDK Develop, test and display web and hybrid apps with a single code base. Download it for free now! http://pubads.g.doubleclick.net/gampad/clk?id=111408631&iu=/4140/ostg.clktrk _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
