I have used these on a project for a client and they worked well but will need a bit of adjustment for speeds and such on an XC. I used my larger ball screw mill on that project so the feeds would not work the same on any size XC. https://www.2linc.com/tools_armor_mill.htm
Not sure which end mill you are speaking off… The stone milling end mills I last referenced are just a form of carbide which is shaped in such a way that it is able to mill stone in the right conditions. The PCD engraving end mills are a slice of polycrystalline diamond (man made diamond) which is brazed onto the carbide shaft for engraving stone and what not. The same diamonds can be found in some metal cutting tools. But like most things which are so hard, they are very brittle so be careful to never drop them or let them crash intot he surface to be milled too fast or they will shatter and you are out a big chuck of change and without an end mill.
This is all very interesting. I’m going to read up on it. I have some sandstone plaques that I’m making up to commemorate the birth of my twins. Sandstone cause it was easier to hand carve with my limited experience. However, I have an old cracked, marble counter top that would be awesome if I could use the X-Carve on!!
Check it. I worked at moros fabrication cutting stone in boulder a while. First pass 5 to 15mm a min Diamond bits only!!!. 2nd pass 50 mm a min 3rd pas 250 to 350 4th 750 finish 1000 to 1500 mm a min. Sinks with 3cm and 2 cm constant hold down. Wet slow and low shallower and slower the better. Use a tile saw water bed and slip it under router on bed and zip tie water hose to router. Secure stone on raised flat surface with waterproof tape and epoxy. Super glue may work depending on stone. Should work rock out like 5 to 50 mm a min constant water or bits will spark. Cheers.
Ps stay away from granite. Marble and limestone and sandstone. Also 2d is typically cut one drop and go round constantly down very slow. 3d carving i have not tried but would go super super light and increase as needed. .001875mm max depth i start with for depth of cut. Maybe way to safe idk but thats where id start with 3d. Gonna try this.