Tape, and glue are bad! Falling off glued door hinges on GM cars were an apex of engineering stupidity.
Glue cannot provide stiffness as such. Hard adhesives, soft adhesives, filler, no filler, all inferior to any mechanical connection. Adhesive is usually the worst of possible compromises.
Hard adhesive is stiff, but dies from most minuscule repeated stresses.
Soft adhesive does not die to repeated stresses, but isn't stiff.
High fill adhesive layers absorb loads, but can't stiffen anything.
Low fill adhesive layers are stiff, but put all stress into the surface-adhesive interface.
Even if you have it in a recessed niche, and use high fill soft adhesive over primed metal surface, you already made enough operations to warrant a proper joining method.
Glue cannot provide stiffness as such. Hard adhesives, soft adhesives, filler, no filler, all inferior to any mechanical connection. Adhesive is usually the worst of possible compromises.
Hard adhesive is stiff, but dies from most minuscule repeated stresses.
Soft adhesive does not die to repeated stresses, but isn't stiff.
High fill adhesive layers absorb loads, but can't stiffen anything.
Low fill adhesive layers are stiff, but put all stress into the surface-adhesive interface.
Even if you have it in a recessed niche, and use high fill soft adhesive over primed metal surface, you already made enough operations to warrant a proper joining method.