Fake rock wall mishap : (

[Tyler McDowell]

I tried to make a pebble/great stuff background. Unfortunately I believe the great stuff dried before the pebbles I'm hoping that the larger pebbles will stay put I don't have much hope for the smaller ones. What do you suggest I should use to glue the pebbles to the great stuff. Silicone, epoxy, spray can glue, paint? Here's a pic.

[xMIDNIGHTx]

If its just the small pebbles you can use silicone. It will hold them in place but it doesn't really make a great adhesive and can be difficult to work with. If I where you I would take rocks (except the biggest ones) off, put silicone down and do it over.

I usually put down great stuff (which can become tacky in 15 minutes), let it dry then shape it. After I am happy with the result I smother the great stuff (working in sections) in silicone and then immediately put my substrate on, firmly pushing it in.

You could also use glue but make sure its non-toxic. Although I believe most brands are after they dry and sit for awhile. Gorilla Glue comes to mind, a member on here used it to build his setup I think.

Good luck

Mitch

[Johnny O. Farnen]

Best glue to use is Gorilla Glue. It is water activated, urethane based, and completely inert once dry. It will glue anything to anything.


Personally, I have dumped Great Stuff as a sculpting media. It shrinks too much over time for my liking.

[taherman]

Amen and Amen. Gorilla glue is basically a less expanding version of great stuff, and should stick very well to it (both urethane based). Also great stuff seems to keep shrinking for months in wet conditions, pulls away from silicone and glass over time. I haven't been the happiest with it, it has its pros and cons. It also absorbs water and warps if you have a water feature running over it.

Originally Posted by SludgeMunkey

Best glue to use is Gorilla Glue. It is water activated, urethane based, and completely inert once dry. It will glue anything to anything.


Personally, I have dumped Great Stuff as a sculpting media. It shrinks too much over time for my liking.

[Melmo]

Originally Posted by SludgeMunkey

Best glue to use is Gorilla Glue. It is water activated, urethane based, and completely inert once dry. It will glue anything to anything.

Yeah, I remember when I discovered Gorilla Glue. That glue works very well on many things.

There is one German glue (Forgot the name...) that is stronger than Gorilla Glue and dries faster. I'll try to find out what the name is.

You know those Germans make good stuff!

[Christiano]

Can I use Gorilla Glue if what I'm using it for will be submersed in water?

Ex: Making rock piles, attaching plastic plants, etc.

Thanks!

[Johnny O. Farnen]

Yes, though it is better to create a new thread rather than resurrect an old one.