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I use this Bankers lamp in my office everyday

This is a beautiful bankers lamp, and it functions well, with one exception. The shade is supposed to be positioned, and then tightened with a screw-on handle. But it doesn’t seem to stay tightened on its own, and the weight of the glass results in a shade UNDER the bulb, with the lamp shining onto the ceiling. We were able to address the problem by wrapping some Teflon tape around the thread of the screw, but one doesn’t expect to have to do that for a brand new desk lamp.

Ledu L557BL Traditional Banker's Lamp