# Carving a Limestone Slab

**URL:** https://forum.onefinitycnc.com/t/carving-a-limestone-slab/6543
**Category:** Uncategorized
**Created:** [July 5, 2021, 3:09pm UTC](https://forum.onefinitycnc.com/t/carving-a-limestone-slab/6543 "2021-07-05T15:09:13Z")
**Posts on this page:** 5
**Page:** 1

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### Author: ![Webb](https://avatars.discourse-cdn.com/v4/letter/w/e56c9b/32.png) [@Webb](https://forum.onefinitycnc.com/u/Webb)
#### Post date: [July 5, 2021, 3:09pm UTC](https://forum.onefinitycnc.com/t/carving-a-limestone-slab/6543/1 "2021-07-05T15:09:13Z")

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Has anyone here used their Onefinity to carve an address into limestone? To have this done commercially, a $20 slab turns into a $250 slab with four numbers carved into it.

If you’ve done something like this, what kind of bits did you use? Was it hard on the machine? Any advice to share?

Thanks!

Jim

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### Author: ![exineport](https://avatars.discourse-cdn.com/v4/letter/e/aca169/32.png) [@exineport](https://forum.onefinitycnc.com/u/exineport)
#### Post date: [July 6, 2021, 8:15am UTC](https://forum.onefinitycnc.com/t/carving-a-limestone-slab/6543/2 "2021-07-06T08:15:15Z")

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I have only sandblasted but not ground with a bit…

[![](https://us1.discourse-cdn.com/flex022/uploads/onefinitycnc/original/3X/b/4/b471410e029c54ebd9fe14881f38ba2d22cac21e.jpeg "Carving Solid Stone on a Homemade CNC Machine") ](https://www.youtube.com/watch?v=OgQBRkcNzUs)

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### Author: ![Webb](https://avatars.discourse-cdn.com/v4/letter/w/e56c9b/32.png) [@Webb](https://forum.onefinitycnc.com/u/Webb)
#### Post date: [July 6, 2021, 2:02pm UTC](https://forum.onefinitycnc.com/t/carving-a-limestone-slab/6543/3 "2021-07-06T14:02:52Z")

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Thank you Jon! A solid carbide bit. Yes, I bet that gets dull in a hurry. I’m surprised the carbide hasn’t chipped. I wonder if stone engravers use a different style bit or a bit with a different tip composition?

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### Author: ![JDog](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.onefinitycnc.com/jdog/32/2056_2.png) [@JDog](https://forum.onefinitycnc.com/u/JDog)
#### Post date: [July 6, 2021, 3:20pm UTC](https://forum.onefinitycnc.com/t/carving-a-limestone-slab/6543/4 "2021-07-06T15:20:14Z")

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I laughed a little when I saw the video was titled “carving stone on homemade CNC” to describe the x carve.

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### Author: ![exineport](https://avatars.discourse-cdn.com/v4/letter/e/aca169/32.png) [@exineport](https://forum.onefinitycnc.com/u/exineport)
#### Post date: [July 6, 2021, 8:09pm UTC](https://forum.onefinitycnc.com/t/carving-a-limestone-slab/6543/5 "2021-07-06T20:09:58Z")

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…And I would personally use water for cooling, chip clearing and to maintain the bit’s integrity/sharpness throughout the tool path.