Post by johnjsgems on Apr 24, 2010 21:59:42 GMT -5
I've tumbled a lot of beach rock. They always come out better after at least a short run in 60/90 (several days to a week). Even though they are nicely rounded there are usually some deep scratches. I used to have access to a private beach in Central CA. that was literally all rock. You could fill buckets with good unfractured, unblemished rocks. They still came out better with a 60/90 run.
If you need some quickly (2-3 weeks) polished rocks of average quality for some project you can get away with starting at 120/220 with carefully selected cleaned beach rocks. But as John says it is best to do a 60/90 run first. Steve
God of Multiple Parallel Universes Full of Rocks and Apprentice to THE ONE.
Post by deb193redux on Apr 25, 2010 13:49:56 GMT -5
You should also test hardness and/or smash one to see if there are pits and fractures all the way to the center. Some beach rock is quartzite, and will take a hard polish. Other rock is very altered jasper, and is too soft to take a polish. Too many folks mistakenly believe any rock can be polished.
The fact that these are very rounded suggests that they may be the softer variety. Post a pic and maybe we can give an opinion on whether the rock will polish.
If they are not going to polish, you need to think about clear coatings.
catmandewe: Took me 3 hours to get my fork lift started yesterday, it is coooooooold here
Nov 18, 2014 11:30:48 GMT -5
mr.mohs: sound like you were forked on the job
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drocknut: Glad you got it started Tony.
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drocknut: doing my happy dance right now because my fridge started working so for now I won't have to call the mobile rv repairman to fix it. Fingers crossed that it keeps working and my tanks thaw soon.
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mr.mohs: strange story Diane I thought that said mobile t.v. repairman
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Fossilman: Are ya' packing up while the thaw is going on?? South lookin' better all the time,I bet!! LOL
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snowmom: It was a comet!
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glennz01: Only 2 more red rocks to cut up
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snowmom: glennz01 don't forget the pictures!
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Shotgunner: woohoo!! Cuttin' quartz! The saw is a slicing!
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snowmom: Shotgunner don't forget the pictures! ( I sense a theme developing here)
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