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February 17, 2019, 12:36:57 pm
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Gluing to Wood

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Author Topic: Gluing to Wood  (Read 815 times)
slabbercabber
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« Reply #15 on: May 20, 2011, 06:34:39 pm »

I like Gorilla glue also, but I go ahead and cut through the glue joint to separate.  Too many broken slabs using the pry method.  If the glue does not hold, you may not have gotten all the oil off.  Good point about moistening the wood first.
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« Reply #16 on: May 20, 2011, 09:19:51 pm »

I use gorilla glue glued to a a piece of  hard maple.  Luckily I have alot of old maple flooring scraps.
 I  let it dry overnight and have had very few rocks break loose.
I use a screwdriver to tap off the rock, then use the radial arm to slice off the oily end and re-use the wood.

I like gorilla glue because it expands so the rock doesn't have to have a flat spot.  I have even glued thunder eggs with great success.
I have to glue about 90% of my cuts with my saw set-up and this has worked best for me.

Nancie
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Nancie
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vesche
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« Reply #17 on: May 20, 2011, 09:26:01 pm »

In reply to the basic question of securing material for cutting I use one of several methods. Sodium silicate is my choice of bonding most previously cut material to a wood slab( 2x4, 4x4, 1x2) that can be fed parallel to the blade.  I coat both surfaces and then press together. I always seal the perimeter seam to fill any voids and wait a couple of days before I cut . If I have a high value piece that needs yo be split because it is too thich I then cut a larger low value rock and then adhere the good slab with sodium silicate once the oil is cleaned from the base piece.  I use spongy foam to keep the two pieces pressed together until the bonding material is well set.  When cutting rough I bond to wood using Loctite PL premium polyurethane construction adhesive and apply to both surfaces before pressing together. I let the adhesive dry until the adhesive is hard.  The wood pieces are cut so that they wiill fit in the vise with material bonded to each end flipped over once the first rock is cut.
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MrsWTownsend
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« Reply #18 on: May 20, 2011, 11:00:46 pm »

Thank you everyone! The pictures are great, visuals are always very helpful. Thank you.

It looks like the ends that are glued are somewhat small. How large a piece can this method be used on?

Also, back to my original question, at least some version of it. I am wondering if it's possible that leftover strips of various sizes of tiles with their surfaces roughed would work as a base that the stone would sit on. That way both the rock and the tile would be fed through at the same time. If the tile piece is wider than the rock it sits on and hits the blade first, then the amount of pressure on the rock at any given point would not be as great as if the rock was glued to the end and hanging out there. There would also be no vertical pressure on the glue joint.


OK let me see if I understand this~ you want to glue the tile to the rock and then orient the tile to the BOTTOM in the clamp, cutting through the rock and the tile?  I am not sure why you would want to do this (if I perceive the question correctly).  The concept of gluing the backing to the stone is so that you can clamp onto the backing (wood piece) with the whole of the stone end protruding out past the clam end, which would allow you to slab all the way to the very last allowable thickness of the end piece and utilize the entire stone.  If your material is clean, you use the right type of glue and the glue has set, pressure on the glue joint shouldn't be an issue.

Regarding the size of the wood pieces being used, it is just a matter of how big you cut the piece of wood and/or the size of the scrap material you have on hand to use.
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Mary Ann
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« Reply #19 on: May 21, 2011, 08:10:26 am »

Thank you everyone! Valuable advice, as always. I had read so many situations of rocks coming loose and ruining a blade that I was hesitant to try the method. I should have more faith! I will follow the precautions and probably try one with gorilla glue since I have some lying around. Looks like I have a bunch of scrap wood to scrounge up.

I would like to try the waterglass, however if I remember, I had trouble locating it last time I was searching for a source. Any suggestions?

I also like the idea of gluing a rock on both ends of the wood piece.
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Mary Ann
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« Reply #20 on: May 21, 2011, 08:15:43 am »

OK let me see if I understand this~ you want to glue the tile to the rock and then orient the tile to the BOTTOM in the clamp, cutting through the rock and the tile?  I am not sure why you would want to do this (if I perceive the question correctly). 

I was just overthinking the whole process, lol. My thought was to still have the entire rock cut (the tile piece would be longer than the rock and the unglued section would be clamped in the vise) so the entire rock could be cut also). Just my usual way of wasting time trying to re-invent the wheel! I need to remember, if it ain't broke (or in this case if a method has worked for years) don't try to fix it. Listen to the experts!
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hulagrub
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« Reply #21 on: May 21, 2011, 08:43:22 am »

Mary Ann, I am only an expert at try and error and error and error...
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Dave, a certified Rockaholic

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« Reply #22 on: May 21, 2011, 08:46:13 am »

Mary Ann, I am only an expert at try and error and error and error...

Like most of us out here.

TOG
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gregorgr8
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« Reply #23 on: May 21, 2011, 02:43:41 pm »

I would like to try the waterglass, however if I remember, I had trouble locating it last time I was searching for a source. Any suggestions?

It was years ago but I got some waterglass  (= sodium silicate)  at a pharmacy

these days I would try google first
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« Reply #24 on: August 05, 2015, 11:15:28 pm »

I had been gluing to wood for several years, mostly to great success. Recently, I've switched to a slightly different system. I've been getting scrap Granite and Marble from a local shop that fabs kitchen counter-tops. They're happy to let me make off with all I can carry at $5 per 5 gallon bucket. I square up the ragged pieces on a tile saw and glue my rocks onto the squares with super glue from Harbor Freight. The stones are ready to slab in a few minutes, no waiting for glue to cure as with wood. Removal when I'm done cutting is easy, too. I just slab the end off the Granite or Marble. It is rock after all. Also, the pieces are re-usable with a little cleaning.
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