On 06/12/13 18:59, Gene Heskett wrote: > 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 yes and thats just for starters . but the fireworks in the tubes are good ! ( with suitable glasses of course )
it's fun when someone sees a laser for the first time , and sees you cutting 1/2" - 3/4" thick steel but try's to think of the reason why it will not cut aluminium of 1/8" , and that it must be faulty ! ------------------------------------------------------------------------------ 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
