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Post by HankRocks on Sept 5, 2017 20:46:08 GMT -5
Victor1941, I have been cutting all of the smaller Marfa Bouquet and Walker Ranch agate biscuits by first gluing them to short pieces of 2X4. It's a bit time consuming as I need to wait for the wood glue to cure. Have glued about 60 or 70 agates so far and no failures. Using Titebond wood glue for Interior Use, it takes about 2 days to release the rock soaking in water. Was going to cut a couple of 4X4" for some of the larger biscuits. I did have one rock slip failure using a "Rocks" Slab-grabber however the rock-cutting gods were smiling on me as there was no Blade damage. Have not used it since.
Henry
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Fossilman
Cave Dweller
Member since January 2009
Posts: 20,680
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Post by Fossilman on Sept 5, 2017 21:47:45 GMT -5
I use the glue and two by four method too... Works every time.. But I just cut my small rocks with the trim saw.. Free hand..
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Fossilman
Cave Dweller
Member since January 2009
Posts: 20,680
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Post by Fossilman on Sept 5, 2017 21:48:52 GMT -5
I refuse to use a rock grabber... Even if they were free!!
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victor1941
fully equipped rock polisher
Member since November 2011
Posts: 1,975
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Post by victor1941 on Sept 6, 2017 21:31:23 GMT -5
HankRocks, my use of plaster and also cement was 40 years ago with small nuggets that had odd shapes. I cut the pieces that might have good plume with the trim saw and used rock grabbers with external screws for holding while cutting. I don't have bouquet to cut anymore but use a Loctite adhesive and glue to wood for the base flat cut for irregular shapes. I then use sodium silicate and glue the flat rock face to wood for the final processing.
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Post by broseph82 on Sept 11, 2017 21:21:37 GMT -5
I use the glue and two by four method too... Works every time.. But I just cut my small rocks with the trim saw.. Free hand.. I've had rocks come off the glues wood before. I mean like make 4 nice cuts and then the last one come off the wood and hang up in the blade. Luckily I'm always within earshot when running my saws. I have a small grabber for my 10" Lortone. Works okay. Not the best for grabbing odd shaped rocks like most people promote. Smooth face with even(ish) edges and it's all good as long as I try and wiggle the piece as much as possible to make sure it's secure.
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Post by catmandewe on Sept 16, 2018 14:49:20 GMT -5
I have cut lots of smaller rocks by putting them in a bucket and filling it with mortar, I usually do a layer or mortar and then add rocks and then another layer of mortar and add more rocks. I like to use the little square buckets that the soap for the dishwasher comes in, I have used milk cartons before but they dont sell milk in cardboard cartons around here anymore. The mortar actually acts like a grinding stone and sharpens up your blade.
I do alot of end cuts glued to boards also, I like Elmers glue-all, I have had waterglass let loose before, never have had elmers let loose though.
Tony
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