yetiabitibi
starting to shine!
Member since February 2016
Posts: 25
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Post by yetiabitibi on Feb 20, 2016 15:39:42 GMT -5
Thanks for all the replies. I've got a few good leads that might work for me.
When I manage to get things stabilized, I'll try an post picture.
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yetiabitibi
starting to shine!
Member since February 2016
Posts: 25
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Post by yetiabitibi on Feb 19, 2016 18:25:15 GMT -5
Do you have a particular brand that you use? Doesn't it yellow over time?
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yetiabitibi
starting to shine!
Member since February 2016
Posts: 25
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Post by yetiabitibi on Feb 19, 2016 9:31:09 GMT -5
I've got a bunch of specimens of fossilized plants and are really quite nice, a mix of gray clay, red ocher, malachite and charcoal, but I can't do anything with them because they are way too fragile.
The matrix is like lightly compressed sand stone and if very easily rubbed away. This was probable caused by the environment in which we found them, a seaside cliff and the loose nature of the stone.
I'm looking for a way to stabilized the surface of the specimens to prevent the matrix from being rubbed away by the slightest touch. I realize that just about anything I do will alter the color of the specimens, but I'd rather have darker colors the useless specimens.
I've heard of using acrylic clear coats, but I really need something that will impregnate into the specimen at least a little bit.
Thanks for any help.
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yetiabitibi
starting to shine!
Member since February 2016
Posts: 25
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Post by yetiabitibi on Feb 19, 2016 9:16:18 GMT -5
Hi all, I'm new to the forum and, somewhat, to lapidary.
I'm starting to do some polishing with a 16" Covington vibrolap and I was wondering how often do you change the grit? I'm doing batches right now, passing a large quantity of slabs at the same grit before going to the next stage. I usually run the vibrolap 4 hours at a time, but how often do I need to replace/refresh the grit?
Thanks for any help.
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