Spray adhesives have oodles of options when it comes to its level of tack and cure speed. Some are designed to be repositionable - great for piecing fabric or making a photo collage, others behave more like a contact cement - where you spray two surfaces, allow to dry, then permanently bond the two faces.
When working with mating dissimilar surfaces, like textile to wood, or rubber to metal, spray adhesive is the best option because of it's cure speed and ease of application. It should be noted that spray glue is rarely structural, so mating heavy surfaces is not advised.
Like any aerosol product, spray adhesive produces a lot of overspray, and it is important to keep that overspray to a minimum. You can mask areas with masking tape and plastic sheeting. Placing your parts in an empty cardboard box before you spray this is a great way to keep overspray to a contained area.
To ensure even coverage, it is best to start spraying from 2" to 3" off of the project's surface on one side and finish spraying 2" to 3" off of the project's surface on the other side. Start off. Finish off.
Most spray adhesives will advise when the open time of the adhesive ends, but most spray adhesives require at least 30 seconds after the adhesive is applied before mating surfaces. This allows the solvents to evaporate and improves the bond strength.
When spraying from the can, try to hold the can as upright as possible. Holding the can horizontally may cause uneven coverage, especially if the can is near empty and already sputtering. Spray glue is designed to defy gravity, so if you can, coat your pieces perpendicular to the ground.
Applying two thin coats of glue is advised over spraying one thick coat of glue. Spraying too much or too closely can wet the surfaces you are trying to bond, or cause puddling. Uneven adhesive thickness means you have uneven cure times within your project.
Working with aerosol cans of any material like glue, paint, or lubricant requires some degree of Personal Protection Equipment (PPE). Wearing gloves is a good way to protect your skin, but be sure to keep micro-droplets out of your eyes by wearing some safety glasses. Some spray adhesives will have a smell strong of solvents, so be sure to work in a well-ventilated area or wear a respirator
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