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Post by radio on Aug 1, 2017 16:58:48 GMT -5
A customer brought a piece of material to cab and make a ring from that is giving me fits! He says it is some type of synthetic Ruby and it something I have never seen or worked with before. It is probably close to a 6 in hardness and is a gorgeous translucent reddish pink . I took it to my normal 8,000 diamond, then the 14,000 polish pad and and am getting the dreaded orange peel effect on the cab. I tried going back to the 1,200, then 3,000 then Zam, but can't get a decent shine.
Any suggestions from you folks who have had experience with orange peel? I know it would help if I knew for certain what the material is, but alas, I do not
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Tommy
Administrator
Member since January 2013
Posts: 12,651
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Post by Tommy on Aug 1, 2017 17:16:11 GMT -5
Hmmm... I have a material that will orange peel EVERY time if I'm not extremely careful. What I do with it is I spend a lot of time getting it ready on lower grits the I stop after 1200 give it a whirl on carpet charged with AO. It's never perfect but it gets it within shouting distance of a pretty good satin shine without very much orange peeling.
Hope this helps...
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agatemaggot
Cave Dweller
Member since August 2006
Posts: 2,195
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Post by agatemaggot on Aug 1, 2017 17:47:20 GMT -5
When you are getting close, try finishing with a good plexiglas polish by hand, that should do it. You won't build up any heat with the hand finishing.
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Post by radio on Aug 1, 2017 17:56:08 GMT -5
Thanks Tommy and agatemaggot I have a 12" bull wheel of Elk hide I use Cerium oxide and Linde A on, but it's buried somewhere not easily accessible. I'll try going back to the 1,200 and work it over again, but stopping at the 8,000 as these have constant water, then try the plexi polish. May have to settle for less shine than I'm accustomed to getting on my cabs.
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Tommy
Administrator
Member since January 2013
Posts: 12,651
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Post by Tommy on Aug 1, 2017 19:00:21 GMT -5
Thanks Tommy and agatemaggot I have a 12" bull wheel of Elk hide I use Cerium oxide and Linde A on, but it's buried somewhere not easily accessible. I'll try going back to the 1,200 and work it over again, but stopping at the 8,000 as these have constant water, then try the plexi polish. May have to settle for less shine than I'm accustomed to getting on my cabs. I think the reason I stop at 1200 - sometimes go to 3000 - is the heat that comes with anything higher. 8000 will almost always orange-peel the material I was talking about even with the water flowing heavy. I have a slow flat lap with carpet - it only turns about 40 RPMs and with the AO it does a fantastic job on tough materials (and agates too) without over-cooking them.
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Post by Pat on Aug 1, 2017 19:27:09 GMT -5
I hear orange peel is the newest, most sought after design element!
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RWA3006
Cave Dweller
Member since March 2009
Posts: 4,174
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Post by RWA3006 on Aug 1, 2017 19:54:30 GMT -5
Please excuse my ignorance, but could someone enlighten me on the plexiglass finish? Thanks for your patience with a newbie.
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Post by rockjunquie on Aug 1, 2017 20:33:43 GMT -5
I don't know if this will help you with your stuff, but for some things that tend to orange peel, I work as much as I can on the first 2 wheels and go as lightly as I can on the soft wheels. It's pushing on the soft wheels that causes the orange peel (micro undercutting). It takes longer, but if you do it lightly and slowly, it won't dig out the orange peel. That's my theory, anyway. It's worked for me.
Plexiglas is new to me, too. But, seeing that it is perfectly flat, sounds like it might work.
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Post by radio on Aug 2, 2017 7:39:30 GMT -5
Thanks all. will give it another go today using new found knowledge. I've cut and polished a lot of unusual things, but never had orange peel before.
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Tommy
Administrator
Member since January 2013
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Post by Tommy on Aug 2, 2017 17:20:36 GMT -5
try finishing with a good plexiglas polish by hand Hi, since several of us are curious about this - can you point us to a good one? I'm assuming you mean plastic polish for removing scratches from plexiglass yes?
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Post by radio on Aug 2, 2017 18:52:06 GMT -5
Had some success today, but still not totally happy with the polish. I took it back to the 400 soft wheel on the Cab King, then used diamond paste on a canvas pad to hand polish going to 800, then 1,200, then 4,000 then 8,000, then 14,000. This is the weirdest stuff I have ever seen!
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Post by johnjsgems on Aug 2, 2017 19:02:36 GMT -5
Canvas likely causing heat too. A leather pad might work better.
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Post by radio on Aug 2, 2017 19:15:18 GMT -5
Canvas likely causing heat too. A leather pad might work better. I did try it on leather before giving up and going back to 400 wet wheel, but it was sueded and didn't work well. Had no smooth leather handy, so had a brand new canvas pad for the end of the Cab King, so squeezed a bit of the paste in a dime sized area, added a drop of extender and worked through the grits by hand with the stone on a dop stick. Spent over an hour rubbing the silly thing and no Genie appeared!
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Sabre52
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Me and my gal, Rosie
Member since August 2005
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Post by Sabre52 on Aug 2, 2017 20:59:22 GMT -5
I've had orange peel issues with jade and the only cure I've seen is to use very worn soft wheels and a very light touch. If you can get through the first two sanding wheels on the Genie without too much orange peel effect, you are home free. More aggressive newer diamond wheels simply cut away too much of the softer areas and result in bad orange peeling....Mel
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QuailRiver
fully equipped rock polisher
Member since May 2008
Posts: 1,621
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Post by QuailRiver on Aug 3, 2017 0:22:26 GMT -5
I've never tried cabbing synthetic ruby but when faceting it the 1200 grit lap is usually the culprit for orange peel. Most faceters skip the 1200 on synthetic ruby and just go from 600gt to 3k (or 8k) for the pre-polish. Then 14k for a commercial shine, and if desired 50k or finer for a competition grade shine.
Larry C.
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agatemaggot
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Member since August 2006
Posts: 2,195
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Post by agatemaggot on Aug 3, 2017 16:09:17 GMT -5
When I mentioned Plastic polish I was meaning the type used on Plexiglas, and, do your polishing by HAND. No heat will result! Try the polish on an old Sweatshirt type material using the inside of the shirt, after you are done just throw it in the washer, the polish is water base and won't stain. You will probably need a hard backing like a table top. Most auto shops and hobby stores sell these products.
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Deleted
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Post by Deleted on Aug 4, 2017 19:35:03 GMT -5
Try diamond paste on suede by hand.
Won't generate heat!
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