Need Help Slate signs

[Martin Denton]

Does anyone have any experience CNC routing slate or granite? we have an AXYZ cnc router and currently sub this work out, just wondered if it can be done on our router and if so what settings and what tools etc? I am thinking in terms of V Carving, rather like we would do for wood signs plus of course cutting the perimiter once carved. If this is feasible is there a specific grade/ type of slate you should use for this?

 

[MachServTech]

I have done some small slate signs and coasters with a 90W CO2 Laser. It worked well. Sealed with a liquid overlaminate but I don't think that was necessary Could be a good excuse to buy a laser if you don't have one. Just be aware they are a fire hazard and need to be monitored at all times. (when cutting or engraving flammable materials...not stone of course.)

 

[Martin Denton]

Thanks, hoping there might be a solution using our CNC without splashing out on a laser

 

[MachServTech]

No experience with that. Have you considered a sandblast stencil?

 

[Martin Denton]

We don't have a sandblasting setup, so in the first instance was hoping I could do it with my existing kit. We don't get large volumes just occasional enquiries.

 

[d fleming]

I'v sand blasted granite tiles for memorial walls but I do my cutting with a wet saw. Marble as well, window sills for the house, etc.