Ah, that makes more sense. I was trying to figure out what kind of glue you'd use ;)
Since limestone is pretty soft you can get away with carbide. Sandstones cut nicely too, although those tend to wear out tools fairly quickly, you're shearing the grains rather than cutting there. Granite, marble, etc do really need diamond tooling - and tend to have massive spindle bearings in comparison with metal or woodworking spindles. They also use far more complex sealing systems and still tend to need a lot more work than 'normal' systems. They also tend to flush the working area with lots and lots of water for both cooling and chip clearance. If you've got a CNC router, try it - cover as much as you can to prevent the water/sludge killing everything and do a small test piece - it will probably be slow, but... that's not a problem unless you're in production. If you find you're doing a fair bit, then way covers and central lube is a big help (not that I've got around to doing that on the router yet) Ben -----Original Message----- From: Erik Friesen [mailto:e...@aercon.net] Sent: 03 September 2012 22:03 To: Enhanced Machine Controller (EMC) Subject: Re: [Emc-users] Limestone cnc I should correct it, not an inlay as in two pieces, just raised lettering. On Mon, Sep 3, 2012 at 4:55 PM, Ben Potter <b...@bpuk.org> wrote: > I've carved a few test pieces in limestone (but never tried to inlay > it), from memory I used a fairly high speed (15-20k rpm) and slow > feedrates > (150-300 mm/min). > > Mind you, I was probably rubbing the tool at that, so it should be > possible to go faster - experimenting a bit should give you some idea > of how fast/deep you can go with your gear. > > Used standard (uncoated) carbide tooling, mainly small ballnoses, with > a light cut. Water was applied using a spray bottle, didn't need a lot. > > When I ran without water I had a lot of problems with the stone > chipping and losing detail. Could be speed/feed dependant though. > > The biggest problem was that the cut stone tended to form a thick > paste, which obviously needed to be cleaned off the rails and screws > before it got into any bearings. > > Hope that helps. > Ben > > > -----Original Message----- > From: Erik Friesen [mailto:e...@aercon.net] > Sent: 03 September 2012 21:45 > To: Enhanced Machine Controller (EMC) > Subject: [Emc-users] Limestone cnc > > 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. > > Could we use a slow router, say 6000rpm, and some type of diamond bit, > and take all day to do the job? > > Is water a requirement? > > Is there some basic reason why a typical cnc router setup won't work? > > ---------------------------------------------------------------------- > ------ > -- > 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 > > > > ---------------------------------------------------------------------- > -------- > 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 > ---------------------------------------------------------------------------- -- 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 ------------------------------------------------------------------------------ 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
