Assuming I research and procure the right bits are there any issues with cncing stone/marble? Will the dust wreck the machines?
Stone requires flood coolant. That’s essential to flush debris, and more importantly keeps the bit from overheating which will ruin the bit very quickly. It also keeps the dust from getting in the air.
I don’t see how flood coolant could be used on either machine. The MDF will be ruined if it gets wet, and this sort of spindle is not normally used with flood coolant.
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Just my 2 cents. I think it is possible. I think you need a good size shallow tub that can capture the flood coolant and act as a sump. Get a harbor freight fish pump. You need to run a very high safe height. I would also cover the mdf just in case with a waterproof sheet to catch any splashes.
Now to the to last part. How to secure your work inside a tub that is sitting loose on the table. Maybe use marine grade plywood inside and below the pan. Screw and seal through the pan so you vacuum or clamp down the bottom plywood.
Since we have currently taken the stance of no liquid coolants on the Laguna CNCs, this shouldn’t be done without full review and clearance from @jamesfreeman.
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Even if you kept the water off the MDF, the spindle bearings may not like abrasive grit-laden water. It will also likely spatter onto at least the Z ballscrew and linear rails. Those do roll on ball bearings directly on the grooves in the actual screw/rail, so any grit that makes it past the wiper seal will get into the grease could easily destroy it.
I did some flood coolant on a fiberglass grinder once. It made quite a mess, and the coolant quickly became mud and sediment. Considerably more volume of debris than I envisioned.
Thanks everyone glad I asked!
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