Experimented with Gorilla Glue

[SS MAYFLOAT]

Last night I mixed 2 tablespoons of gorilla glue and a cup of glass fibers to make "Peanut Butter".<br /><br />I then used it to glue the endgrain of a piece of 3/4 plywood butted to the flat surface of another. After 4 hours, I could not pull them apart. (Tonight I plan to see exactly how much force it is going to take to rip them apart.<br /><br />On my project, I need something that I can apply and set into place and this seems like the best solution. The areas are uneven, some gaps up to 1/4" wide. With the glue being able to expand and re-enforced with glass strands, it maybe exactly what I need. I'm more interested in the compression strength since that is what force will be placed on this repair.<br /><br />I'm at the point of intalling my water storage tubes using 4"PVC. There will be 6 ten foot pieces with 3 on each side. I have made it into its own assembly that I will be sitting down into a cavity of the hull that was once filled with foam. My assembly of PVC will work as a grid making up many individual compartments. If I can coat all the bottoms of the grid work plywood and set it into place, the Gorilla Glue Peanut mixture will fill the voids as well as making a tight bond to the hull to the water tank assembly. Then I will use the same mixture to secure the cabin deck down on the water tube assembly. <br /><br />With this assembly, there is no way of glassing in the plywood and inserting the tubes. It will have to be done all in one shot. Epoxy or poly I feel will not fill the voids since it does not expand.<br /><br />If I get time tonight, I'll post some pics. It will be alot easier to understand my ongoing project.

 

[dakk1]

Re: Experimented with Gorilla Glue

Interesting. If your talking about the polyurethane glue that goes by the name of Gorilla Glue, I use it often in my work (furniture repair). I'm curious as to how it is going to work in your application. It is expensive and seems you'll need quite a bit of it. Post those pics if you can.<br /><br />Dave

 

[rottenray6402]

Re: Experimented with Gorilla Glue

The experience I have had with Gorilla glue has been great. I've used it on almost every type of material you can imagine. My last project was repairing the speedometer sender on the transom. I had broken the mounting bracket on a bad launch and didn't want to buy a new one. I glued the broken bracket to the transom (aluminum) and it seems impervious to water.

 

[Paul Moir]

Re: Experimented with Gorilla Glue

Since most polyurethanes are moisture cure, it's not suprising that they're impervious.<br /><br />There's a few posts good posts over on Glen-L and such about PL Premium and Gorilla used as boat building adhesives. There are a few traditionalist naysayers but they never seem to have any evidence to back up what they're saying.<br />woodworkforums.ubeaut.com.au/showthread.php?t=18819

 

[sdunt]

Re: Experimented with Gorilla Glue

I think the 1st comment about cost is right on. At something like $8 for 4 oz, that makes this stuff like $250 a gallon. You can afford even West systems epoxy at those prices..<br /><br />Now the PL construction adhesives in the caulk tube is a little more reasonable its $8 for 10 oz. Still $120 a gallon.<br /><br />It also depends on whether you have some Epoxy on hand and whether this is a small job or not.