For extremely smooth surfaces like transparent glass, TPU plastic, some silicones, or stainless steel, additional adhesive like super glue may be required to ensure proper adhesion of the steel plate.
We recommend Gorilla Glue brand super glue like the one on the right.
Make sure the surface you are attaching it to does not have adverse effects with super glue.
Most transparent glass, TPU plastic, or stainless steel do not have adverse effects with super glue and can easily be removed when desired but please be careful with synthetics like leather, certain plastics and acrylics and apply a little on an inconspicuous area to test it.