 Extra Crispy  | 01 Mar 2016 10:43 a.m. PST |
gluing different materials to each other. Specifically non-porous materials like plastic? I want to make some terrain using plastic packaging – yogurt cups, cookies trays – and the like. I have wood, metal and paper bits to add. White glue just pops right off. Super glue (Gorilla brand) likewise. Epoxy? Other? |
| Bashytubits | 01 Mar 2016 10:49 a.m. PST |
I have had good luck with Gorilla glue. Epoxy works as well but I find to be rather messy if you aren't very careful. |
| steamingdave47 | 01 Mar 2016 11:25 a.m. PST |
What about the Gorilla glue which is like PVA glue? I find it really good. |
| Rich Bliss | 01 Mar 2016 11:32 a.m. PST |
I'd try priming first and then using white glue. That smooth surface doesn't allow for any mechanical keying and it's obviously resistant to CYA. |
| 22ndFoot | 01 Mar 2016 11:40 a.m. PST |
Loctite Power Grab All Purpose Clear Construction Adhesive. |
| Who asked this joker | 01 Mar 2016 11:42 a.m. PST |
Try Loktite All Plastic glue. That seems to be super glue in a tube but it also has an "activator" which is probably a primer pen. If that doesn't work, I would go with 2 part epoxy (Green Stuff) and just glob that on. |
nnascati  | 01 Mar 2016 1:44 p.m. PST |
I use super glue with a bead of white glue (Elmers), holds everything. |
| rmaker | 01 Mar 2016 2:16 p.m. PST |
Try wallpaper border adhesive. It's similar to white glue, but is specially formulated to hold borders to wallpaper, wood, tile, or painted surfaces, with the border often being of a plastic material. You can get it at any home decorating store and it comes in many sizes, from 1 oz. tubes to quart tubs. |
| MajorB | 01 Mar 2016 2:59 p.m. PST |
There is no one glue that will stick all those different materials together. Glues are designed to work differently depending on the materials to be glued together. For example, you wouldn't use PVA to stick metal but you would use it for paper, card and wood. Plastics are a law unto themselves! Soft plastic, hard plastic, etc. All need different glues. |
| Rudysnelson | 01 Mar 2016 4:38 p.m. PST |
Have you seen the ultra-violet light system for melting the glue/plastic and having it meld into both sides. i am curious to give this a try with plastics. |
Dervel  | 01 Mar 2016 5:52 p.m. PST |
Devcon 5 minute epoxy will work… I use it for dissimilar materials all the time. It is slightly flexible, the yogurt containers might be an issue if they are flexible enough they could break lose. Then you might need a silicon or flexible based construction adhesive… |
| 53Punisher | 01 Mar 2016 8:05 p.m. PST |
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| DyeHard | 02 Mar 2016 12:43 p.m. PST |
Another useful site (without a specific commercial sponsor) is "This to That":
thistothat.com I think you have some good advice above.
For a smooth plastic consider scarring it up with an Exacto, rasp, or aggressive sandpaper. The Gorilla glue is a Urethane (it expands as well, not unlike "Great-Stuff) It will stick to almost anything, especially your skin. You can always make porous things nonporous, with PVA or AC glue. It is flexing and differential rates of expansion that really makes gluing dissimilar materials difficult. Consider filling flexing plastic shapes to stiffen them. |
| steamingdave47 | 04 Mar 2016 12:58 a.m. PST |
@ Die Hard "The Gorilla glue is a Urethane (it expands as well, not unlike "Great-Stuff) It will stick to almost anything, especially your skin." The gorilla glue I am using is definitely not a urethane expanding type, nor a "superglue". It is sold in plastic bottles, about 500ml size, with an overall orange look and a gorilla picture and is labelled "Gorilla Wood Glue". The actual glue is a viscous, beige coloured liquid, perhaps a bit more viscous than standard PVA wood glue.It takes about an hour to dry and is absolutely brilliant- I have repaired concrete, pottery, wooden items etc using this. You do need to clamp the parts, but just holding them together for a few minutes works. Sold by my locally owned DiY store, but available on line from Screwfix, Amazon etc. |
| DyeHard | 04 Mar 2016 11:54 a.m. PST |
I did not mean to misdirect you. I was taking about the original Gorilla Glue
By checking the SDS (Safety Data Sheet) at the company's website: gorillatough.com/sds
You can gain some insight into what you are working with.
Their basic product is:
Product Name: Gorilla Glue
Synonyms: Polyurethane Adhesive
Which they say is 40% to 70% polyisocyanate Prepolymer based on MDI.
As far as the expanding part, this video is a guide:
YouTube link
and
YouTube link
The "Wood Glue" is a PVA:
Product Name: Gorilla Wood Glue
Synonyms: Polyvinyl Acetate Polymer product in water
They have a number of other products as well.
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