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Post by Roller on Mar 14, 2010 18:11:40 GMT -5
Any tips on doing mex lace ?
Noticed some undercutting and alot of pits after the first week .. grinded them out with tile saw and added more ceramics ... Any other tips?or suggestions"?or experiences? ...currently rolling with 1 lb oj and 1 lb milky quartz both of them seem really good but still slightly affected as well .. still dont look that bad though .... could be better ..
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Sabre52
Cave Dweller 
Me and my gal, Rosie
Member since August 2005
Posts: 20,497
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Post by Sabre52 on Mar 14, 2010 18:48:17 GMT -5
I find that , as long as the lace is matrix free, it's actually quite easy to tumble or cab. It's the softer limestone like matrix that usually causes all the undercutting and pitting....Mel
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Post by deb193redux on Mar 15, 2010 9:09:58 GMT -5
Also, in red Mex Lace, the red parts are often much softer and do undercut.
I have played with the undercutting to achieve a textured result. Mostly I did this with softer Leopard Skin Jasper, but a few times with red lace that also had some hemetite-like gray banding.
If you do not want the undercutting, do as much shaping on course wheels (e.g., 100g, 220g) and then only briefly tumble in 220 to smooth the surface but pull it before any undercutting occurs. Not much indercutting should occur in higher grits, but pull them out of each stage on the early side.
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Post by Roller on Mar 15, 2010 10:34:57 GMT -5
Yes the red stuff was mostly affected with the undercutting ... I did grind some down but the other problem is major pitting as well ... Sounds like a good plan ..Thanks .
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Post by deb193redux on Mar 15, 2010 19:46:58 GMT -5
IMHO undercutting can sometimes look artsy - not so much with pitting.
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