Contact Cement (Spray)

There are a lot of spray adhesives out there. Loctite, Gorilla, and Scotch all have acceptable offerings, and Hi-Strength 90 is technically a higher grade adhesive, but 3M's Super 77 strikes the best balance for cost and effectiveness and is the best overall pick for adhesives that are able to be easily sourced.

Use Case
Grade

Ease of Use

Excellent

Foam to Core

Great

Foam to Foam

Excellent

Tape to Foam

Amazing

Super 77

A can of 3M Super 77.

Very tacky, with a set time that gives you ample opportunity to make sure that pieces are well positioned and in solid contact. Can expect surfaces to stick together well within 10-20 seconds of application and to cure within half an hour. Does not soak into materials as readily as DAP, leading to far less adhesive being needed to coat a surface. 3M markets Super 77 for bonding foil, foam, paper, metal, plastic, fabric, cardboard, and insulation.

Hi-Strength 90

A can of 3M Hi-Strength 90.

A stronger adhesive with a slightly wider range of applications than Super 77. This will hands down give a better bond than Super 77 and is recommended for instances where you see Super 77 not being sufficient. There is a difference in usage though: while it is already a best-practice to only use adhesives, especially spray adhesives, in a well ventilated environment, Hi-Strength 90 is one that releases harmful Volatile Organic Compounds (VOCs) when used and curing; these shouldn't be an issue and it should both stop off-gassing, and thus no longer having the strong smell, after a day or two. Because of these extra concerns, I would not recommend this as a general replacement for Super 77.

A chart produced by 3M for showing what their different spray adhesives are best suited for.

Sources


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