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.
superioragates: Man do I love Oregon coast weather....its taken some getting used to...but I do love it
Feb 1, 2015 0:09:47 GMT -5
snowmom: lynnj44 keep trying, you'll get it. The visual tutorial helped me learn how to do it, and if this old dog can learn, so can you! when you post the link in the window, the photo doesn't show up until after you hit the button to post.
Feb 1, 2015 5:00:34 GMT -5