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possible scratches on petrified wood

stefan
Cave Dweller

Member since January 2005
Posts: 14,113

possible scratches on petrified wood Oct 21, 2023 15:43:10 GMT -5

Quote

Post by stefan on Oct 21, 2023 15:43:10 GMT -5

Petrified wood is a challenge. It is my favorite rock to tumble (came in 4th place in the World Rock Tumbling Contest this year with Pet wood). THe biggest issue with Pet wood is the natural fracture points (growth rings and wood cells). I think I know what you are describing and more than likely it is undercutting due to poorly healed fractures (that occurred naturally a long the growth rings) Frustrating to say the least. Patience is key with pet wood, and I often run it for many weeks in course, only to see it break or crack in later stages. The other problem I run into is pet wood that is replaced with softer minerals rather than quartz (I see a lot of opalized pet wood, that just takes forever to work out all the problems). Again patience is key. I use plastic pellets in all my stages from pre polish onward. If I'm running them in the vibe, I use ceramics. I don't like ceramics in my rotaries as I'm not pleased with the end results.

I can't tell if thats some Gneiss Schist, or that Schist is Gneiss. All I know is don't take it for Granite

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RickB:

Surf's up - Pastrami on the hoof Nov 13, 2024 16:44:09 GMT -5 *

Wooferhound: I make my Sandwiches without the Bread Nov 14, 2024 12:56:46 GMT -5

amygdule: I like my meat warmed to Body Temp^oF... Then wrapped with a slice of Cheese

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RickB:

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(happy098)

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RickB:

Nov 15, 2024 7:10:24 GMT -5

rocknrob: Holey Moooley Nov 15, 2024 11:53:09 GMT -5

vegasjames: Must be a Swiss cow. You know, these are only cows you can get Swiss cheese from. (laugh)

(laugh)

Nov 15, 2024 17:44:51 GMT -5

RickB:

(smart)

Nov 15, 2024 18:09:19 GMT -5

parfive: The Scooter knows. Nov 16, 2024 0:36:53 GMT -5

RickB: In theme with things - today is National Bread Day Nov 17, 2024 6:53:42 GMT -5

dshanpnw: The slice of life. Nov 17, 2024 9:35:37 GMT -5 *

parfive: The greatest thing in its day. Nov 18, 2024 13:57:33 GMT -5

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RickB: Stop loafing and take your buns to Agate Beach after the storm Nov 20, 2024 11:57:52 GMT -5 *

amygdule: The Ocean is still tumbling with 20 foot waves...11/20/2024

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rocknrob: That was one heck of a windstorm that thankfully missed me. I guess Seatac almost hit 60mph gusts. I bet those were some fun landings Nov 20, 2024 21:55:16 GMT -5

rocknrob: I'll always love my pet rock, he's such a geode boy. Nov 22, 2024 9:27:33 GMT -5

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Welcome to the Rock Tumbling Hobby Forum where we share a love of rocks and a sense of community as enduring as the stones we polish. The RTH Forum of www.RockTumbling.com is an Amazon Associate site and we earn money from qualifying purchases you make after clicking on our links such as this Rock Tumbling Supplies on Amazon link for instance, or any of our various product ads and banners. By clicking our links every time you begin your Amazon shopping experience, you are generating a bit of revenue for the forum which helps us cover our expenses. Thank you for your support!