I have this round steel color metal attached to my coffee table glass..I'm trying to use the glass to make coffee table with wood log.Does anyone know to remove the metal screw adapter(I think so it's glued to the glass)
I would use a soldering torch and razor blade.
Moving the torch back and forth across the metal adapter quickly so as not to heat it (or the glass) too quickly. Then try the razor blade between the glass and the metal adapter. No go? Apply a little more heat, and try again, until it comes right off.
I bought a £100 glass table just for the glass although it had 6 of these metal adapters glued to it.(thought it'd be worth the risk) I used a cheap electric soldering iron and ground down a steel bolt so it would replace the tip and could be also screwed into the metal adaptors and rest there while heating up. While it was heating I clamped some mole grips to the metal and applied a constant downward twisting pressure to it until the glue meets its melting / softening point and it comes away. So no heating of the glass and just enough heat to get it off. I wish someone had told me that before I tried it as i was bricking it waiting for the gas to shatter on the first one.