Question on the Gorilla Glue. When cured, will it absorb water? Of course if I used it, I would use fiberglass and resin just like any ding repair, I'm just curious about the nature of it. If it sealed and didn't absorb water, it would make for a good travel temporary emergency ding repair that could then be finished at a later time.
Excellent question. And I don't have a certain answer for you.
The thing is, Gorilla Glue is a polyurethane resin/adhesive foam, depending on the pressure in the glue joint. Makes it nice for fixing things like commercial bartstools, where the original hole has been worn or worked bigger over time and repairs postponed. And the hole isn't as tight as you would like. The stuff forms a skin that I think is fairly water resistant
But when it's expanding against no real pressure ( a taped over ding for instance) it's not as dense, nor as hard, and it will expand past the original size of the cavity, so you would sand it to shape and then you have the foam itself opened up - I think it would take on water about as easily as a standard garden variety polyurethane foam blank would, no reason to think it wouldn't. And then, when you were ready to do the final permanent repair you would want to get the wet foam out.
Now, having said that, a few things.
I don't know for sure either way, does it absorb water or not. Never tried it. The way to find that out would be to take some, a blob, weigh it with a fairly sensitive scale, put it in water (maybe with a weight on top of it) leave it there a while, then take it out and weigh it again. I'd maybe try it with some foam blank scrap/cutoffs alongside the Gorilla Glue blob, and also another blob with the skin sanded or cut away to expose the foamy interior to see what that does.
Next- while the Gorilla Glue foam isn't gonna be structural reinforcement the way glass cloth is, it is a very good filler. Put some in, let it go off, sand, impervious tape ( like shipping tape) over it, it's a good temporary repair, certainly better than the sun cured glop. And ideally, when you take the tape off it doesn't take any of the foam with it and you can just glass it.
And then there is this. The foam is an easy and fast filler, sanding it is far easier than sanding a resin filler plug and for the time and effort expended using some of the sun cured and sanding it and all you could hit it with the GG, sand that when it's cured and then put a cloth patch over for a good, very solid repair.
Sorry I'm not more help here.
Bumping this thread just because I think Gorilla Glue is cute and a bit of an outlier.
We have Tarzan Grip here (https://www.bunnings.com.au/tarzan-s-grip-250ml-high-strength-glue_p1210339) which seems to be a foaming PU glue.
Anyone else using this or similiar for filling dings? Good, quick option, thanks Doc.
Uhm, the Tarzan's Grip is pretty much the same as original Gorilla Grip in that it (according to the blurb) goes off a pale brown - which looks good on an older board with a bit of a tan, not so great on a new one. The 'clear' gorilla grip goes off as a white foam that's better for that. But- the Tarzan line doesn't include a foaming clear glue.
Now, I looked at the MSDS for the Tarzans Grip- it's made by/sold by Selleys, which in turn is a division of a bigger paint company. Selleys makes Selleys Aquadhere Durabond, https://www.selleys.com.au/products/adhesives/woodworking-adhesives/sell... which goes off yellow. You might try contacting Selleys ( https://www.selleys.com.au/contact-us/ and a chat window pops up sometimes ) and see what else they might have?
hope that's of use
Cheers Doc, I gave them a call about a few things for various projects. I think we can get Gorilla Glue too.
Interesting materials indeed.
Ah? Cool. It's really nice if the manufacturer will talk to you, the information we pass around is real nice and all, but the source is, well, the source.
I mentioned the MSDS ( Material Safety Data Sheet) on the Tarzan's Grip before, a copy of it here. https://2ecffd01e1ab3e9383f0-07db7b9624bbdf022e3b5395236d5cf8.ssl.cf4.ra... - there is a tremendous amount of information in these, who makes it, what its major components are and so forth. And yes, how to use it safely and what to do if you don't, in extreme detail.
https://www.gorillatough.com/wp-content/uploads/White-Gorilla-Glue-SDS-U... is the one for the White Gorilla Glue, which I have mistakenly been calling 'clear'.
It's an interesting world, no?