Rattle can glue will work if it is the right kind 3M #77 is NOT the right kind. 3M makes several hi-strength glues in rattle can. Look ofr hi-strength and hi-temp. Short of that any cheap spray gun will work but don't expect to get a good spray pattern out of it. Most you hope for is a slurry and the gun must be cleaned with Xylol or it will become useless in no time.