On Monday 03 September 2012 18:20:43 Erik Friesen did opine: > What would be the minimum setup needed for doing an inlay on limestone? > > My dad in law was asking about this, and I don't see a lot of easy info > about this. > Historically, this is done by cutting out a rubber stencil, and air blasting it with grit, which bounces off the rubber, but abrades the granite/marble/limestone thru the stencil openings.
> Could we use a slow router, say 6000rpm, and some type of diamond bit, > and take all day to do the job? 6k is probably too fast unless very heavily flood covered in coolant as the diamond wear scales with the heat as its more ablation than wear. ALL day might be an underestimate. :( I do diamond wheel work on my lathe at very low feed rates and high numbers of passes. Working dry, if I see sparks from steel, its cutting way too fast. The dremel is running as slow as it will. > Is water a requirement? > > Is there some basic reason why a typical cnc router setup won't work? Not really as long as the coolant doesn't carry too much grit into the works. For onsies I'd rig a catch cover/pan and do it, for hundreds of an item, a pulsed co2 laser to heat and thermally crack the material off would seem to be a better idea. A vacuum dust pickup to keep the workface clean should be used for better "cutting" speed. Properly throttled, an Onieda Dust Deputy would catch 99.9% of it in a 5 gallon bucket, so filters on the vac last forever and reduce your chance of getting silicosis. 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) My web page: <http://coyoteden.dyndns-free.com:85/gene> is up! Specifications subject to change without notice. ------------------------------------------------------------------------------ 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 Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
