glue for stones??

**nessmuck** · 08-02-2010, 12:26 PM

Just asking what glue to use to join back a coti combo, and if i should do any special surface prep before the glue?? The stone is 1 x 5 thanks

**Stubear** · 08-02-2010, 12:41 PM

I'd probably use something like Araldite or Evostick to glue two pieces of stone together. They are both pretty viscous glues and pretty much bond anything to anything so they would work well for this sort of thing.

Just make sure the surfaces are flat and free from dust and other detritus, then apply the glue as per the instructions.

You might also put a book on top of the hone to put gentle pressure on the join while the glue sets.

Good luck and keep us posted!

**Utopian** · 08-02-2010, 01:07 PM

Just make sure you don't use an expanding glue like Gorilla Glue unless you have the stone evenly supported and clamped on both surfaces.

**zib** · 08-02-2010, 01:49 PM

I've done this many times. I've used two part epoxy with good results. Natural combos do have a habit of coming apart.

**gugi** · 08-02-2010, 01:58 PM

Yeah, long curing epoxy is what you want to use.

**gssixgun** · 08-02-2010, 06:04 PM

Marine Epoxy is what I used....I think it is what Gugi is talking about with the Long Cure too

**nessmuck** · 08-02-2010, 11:29 PM

Thanks for the info, we'll give it a go!

**PhatMan** · 08-03-2010, 07:17 AM

Nessmuck,

+1 on the marine epoxy - worked a treat for my combo stone when it delaminated

Have fun !

Best regards

Russ

**JeffE** · 08-03-2010, 12:44 PM

Do you guys notice any difference between the long-curing epoxy and the 5-minute epoxy? I like using the 5-minute stuff, and I've never had a problem with its durability, but when I see others recommending "marine" epoxy or long-curing epoxy, I wonder if I'm missing something. Thanks.

**Logistics** · 08-06-2010, 02:53 PM

Originally Posted by JeffE

Do you guys notice any difference between the long-curing epoxy and the 5-minute epoxy? I like using the 5-minute stuff, and I've never had a problem with its durability, but when I see others recommending "marine" epoxy or long-curing epoxy, I wonder if I'm missing something. Thanks.

The way I understand it is like this...

The 5-minute epoxy uses more of a thermal catalyst (hardener) and tends to be more resistant to high temperatures and UV light. Whereas using the marine epoxy takes more time and the epoxy has a better chance to bond to wood and seeps into pours better. Downfall is it breaks down in UV light and thus needs a protective coating (sealant).

If I were to bond two stones together I would make sure the surface is flat but scuff it a little to help ensure a better bond. Kind of like lapping it with a DMT325 then maybe hand sanding with a lower grit emery paper to give the epoxy something to better grip.

I'm not an expert but this is what I always thought of it. Please, correct me if I am wrong.

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