On 06/28/2012 09:02 PM, BRIAN GLACKIN wrote: >> I don't have a downdraft table but I assume you will have to move huge >> amounts of air to capture the dust from the plasma. Quite a bit of the >> dust flies up from the cut point so to be efficient the table will need >> to be completely enclosed to capture the dust. The amount of dust >> depends on the material condition as well. It seems to me that the more >> rust, crap, and dirt on the plate the more dust I see. >> >> I recall reading someones build blog where they immersrsed the metal > roughly 50 mm or so below the water. The plasma would hold the water back > during operation and the intimate water contact kept the dust to a complete > minimum. I cannot recall who did that though.... > > Brian
I used to know someone that worked in a shipyard, in Newport News, Va. I asked him once, why the cut metal underwater, and he told me that it was done that way, to minimize warpage. These are chunks of steel 1" to 4" thick, not the 1/8" to 1/2" (or metric equivalent) thickness' a HSM/Light Industrial user would be using, but the idea is the same. -- -Mark Ne M'oubliez ---Family Motto Hope for the best, plan for the worst ---Personal Motto ------------------------------------------------------------------------------ Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
