Hi Sammie, I would use "clear araldite" its a two tube mix of clear glue and hardener, You may wish to try it first with a glass bottle or similar and a piece of steel, just for piece of mind but I have glued glass and steel before very successfully. Just a thought though, its likely your frame is painted, and unless the paint is well adhered to the frame, that will be your weak point. If its not painted then no worries
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