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.
mr.mohs: low nineties w/a hint of humidity and some good hot sauce
Jul 31, 2015 10:23:02 GMT -5
sHoTgUnNeR: 96 and rainy here. Miami hot. Yukky
Aug 1, 2015 8:17:20 GMT -5
drocknut: That is yucky Scott. Humidity makes it miserable.
Aug 1, 2015 9:09:59 GMT -5
sHoTgUnNeR: Indeed m'lady, indeed.
Aug 1, 2015 13:09:33 GMT -5
washingtonrocks: The Seattle area has reached the 90 degree mark for 11th time this year, "shattering" the old record from 1958 of 9 days lol. We don't know what to do with ourselves!
Aug 1, 2015 14:13:11 GMT -5
mr.mohs: downloading Win 10 @ 35% this is not very hot.... mostly™
Aug 1, 2015 14:17:48 GMT -5
washingtonrocks: mr.mohs, the forecast calls for tepid download times and torrential boredom.
Aug 1, 2015 14:24:30 GMT -5
mr.mohs: at this rate Win 11 will be out
Aug 1, 2015 15:00:18 GMT -5
jakesrocks: Hey Ed, give us a heads up about Win 10 after a few days. I still have time to cancel my order & stick with Win 7.
Aug 1, 2015 16:29:34 GMT -5
mr.mohs: will do! so far this is a 4 hour download. first download took 3 hours.. now it doing some updating with 87% to go... another hour, I suppose-- might have to send a message from the other side at this rate...mostly
Aug 1, 2015 18:03:38 GMT -5