minerken
Cave Dweller
Member since August 2013
Posts: 466
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Post by minerken on Feb 14, 2015 21:46:52 GMT -5
I'll try to explain what it is that I have done here and hope that the pictures will make it clear. First why did I do this? if you have a 10 inch saw and want to cut a larger hard stone like agate you may get disapointed I have found that the 1/3 the diameter rule of thumb doesn't work with good hard agate like Montana or Brazilian especially.You may be familiar with the process of rolling the stone through the saw where you get drenched with oil and make a funky cut if you can get through it at all. This is my solution to the problem, first I start with a 4"x 4" piece of channel iron with a hole drilled dead center then I had a disk made by a machinest 4" in diameter with a bolt 1/2 " bolt welded dead center to it. The next step is to glue your rock to the disk centered as well as possible. Clamping the channel iron in your vise and sliding the disk with glued rock and bolt through the hole and tightening down with a ratchet. At this point you can start your cut, I start with about a 1 inch long cut first, then I loosen the nut and rotate the rock one way or the other doesn't really matter, and proceed to cut another 1" swath I continue doing this until I'm almost through the rock then let is go from there hope these pictures show what I am doing. www.dropbox.com/sc/x4oruuoildmtogp/AABkiiv9pTH-SaTKWbDcGxxlaI'm not too good at trying to explain something like this but if you have any questions go for it I'll try to answere for you this has several or at least a few benifits.
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Post by captbob on Feb 14, 2015 23:39:50 GMT -5
That's kinda neat!
What type of glue do you use? Ever had a glued rock pop off while sawing? How do you get the rock off the disk and the glue off the rock?
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Deleted
Deleted Member
Member since January 1970
Posts: 0
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Post by Deleted on Feb 14, 2015 23:42:55 GMT -5
Love home made solutions. How tough is it to get the channel clamped perfectly square and plumb with the blade? Jim
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minerken
Cave Dweller
Member since August 2013
Posts: 466
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Post by minerken on Feb 15, 2015 1:36:41 GMT -5
actually the first cut may be off a little but then it parallels the blade I do take the calipers and check the distance and adjust as best as possible, but basically just line it up with the edge of the sled, the last cut is not necessarily even either so I make that a very thin cut just making sure it won't run into the channel.One of the really nice things is that if you can leave the channel in place you can have several disks set up and change back and forth so you can make one or two cuts off one then switch to another back and forth without having to readjust every time. if the first cut is a butt cut you don't care anyway but if you are trying to cut one that has already been slabbed I again take as thin a cut as I can to true it up to the blade.
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minerken
Cave Dweller
Member since August 2013
Posts: 466
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Post by minerken on Feb 15, 2015 9:38:52 GMT -5
Captbob I use gorrila glue and clamp them over night I have had one pop off in really cold weather.To remove the rock I sometimes i put it in some acetone but lately I have been using a bernzematic tourch and the use a stove top scrapper with a single edge razor to clean it off.
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Post by 1dave on Mar 1, 2015 8:08:20 GMT -5
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