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Post by stardiamond on Nov 11, 2019 16:37:12 GMT -5
I'm self taught and the only book I looked at showed circular motion and I thought that's fine with circles and ovals but I don't cut those shapes. I worked side to side and then rocked. I discovered that I got better and faster results working in a circle through 280 soft for all shapes including free forms. I've continued to go side to side and rock on sanding and pre-polishing. On softer material that works fine but on harder material, I miss spots near the edges and occasionally get small flat spots in the middle. I thought it was my sanding wheels and that might have been part of the problem but I believe it is also technique related. I'm going to go back to 600 on three cabs and some new ones and see if working in a circle improves the results. I don't like having to go back and redo steps.
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Post by stardiamond on Nov 12, 2019 13:42:46 GMT -5
I spent a while on 3 cabs and learned it is more about dry and inspect and dry and inspect. The only technique change that helped was pushing in from the edge instead of sanding toward the edge. It helped get rid of the flat spits near the face edges.  |
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Post by stardiamond on Nov 13, 2019 15:48:21 GMT -5
I reinspected the Owyhees I fixed and they still had problems. I really can't trust my eyes. I went back to 325 and marked where the girdle meets the face with a medium tip sharpie. I would sand the edges all the way around and then see all the spots I missed.
I kept sanding until all the ink was gone. I repeated this process for 600, 1200 and pre polish. I adjusted my technique to turn the cab so the back was facing up and then rotated toward the face. I still missed spots. I'm satisfied with all the cabs except the Owyhee I pictured. It still has 4 spots that need to be fixed. I can go back to 600 and really bear down. This material is really hard.I'll get it next time. The other Owyhee is acceptable. I don't do perfect.
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jim931
starting to spend too much on rocks
Member since August 2017
Posts: 117 
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Post by jim931 on Nov 15, 2019 20:45:04 GMT -5
I read this trick either on here or from somewhere on the internet that has helped me tremendously. When trying to dome the cab I cover everything from the girdle line up with permanent marker. It really helps me see what spots I’m missing and if im actually sanding to the edge which I wasn’t until I started this trick. I then just reapply the sharpie before going to the next grit. It also helps show if you missed any scratches. They did say it may stain some stones but I haven’t had that issue yet. My cabs went from looking like I tried to facet them to coming out really good in my opinion. I’m really new into this hobby so I’m sure some of the more experienced people can weigh in on this idea.
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