On 12/06/2013 07:56 PM, Gene Heskett wrote: >>> PS: There was a ns pulsed UV Laser (quadrupled YAG) on ebay recently, >>> this would be the right one for the job. I was close to buying it was >>> quite cheap. >> unfortunatly not , copper for one will absorb the heat . >> and for a laser to work it realy needs to vaporise the metal , which is >> one reason you see dvd lasers burning wood or plastics >> rather than a clean cut . >> iv'e try'd copper and even with 600w + it's difficult to even mark it >> although the fr4 will burn quite nicely and be nice and crisp and fill >> your room with unfortunate toxins > Just one of the reasons to have a 4" hose from my dust collector arranged > to keep the area clear, and the stink outside, where my home sewn 2' > diameter, 10' foot long collector bag lives.
Also, you need an inert gas enclosure (argon) to prevent catastrophic results. Vaporizing metals at these temperatures are extremely reactive and any oxygen will result in a burning cloud. > Not to mention eyeball wreckers just from the reflections off the > surrounding walls. Bad idea for someone not well versed in the tech. Yes, the laser should be tuned to an absorption line of metal/material being cut to prevent too much energy loss due to reflection. > Humm, thats beginning to sound like non-exportable munitions. Indeed, it is not a hobby-laser anymore... -- Greetings Bertho (disclaimers are disclaimed) ------------------------------------------------------------------------------ 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
