IKEA Lamp shade E12/E14/E17 adapter
thingiverse
Like the original adapter provided with the lamp shades. Mine broke when removed after becoming brittle over time. My shades are a few years old, so I don't know what they will fit. However, I see that similar ones are provided with "Myrhult". Obviously don't own the original design off which the primary dimensions are taken, but is not an exact copy. Somewhat reinforced due to the inherent weakness of the 3D-printing process. Source files for FreeCAD attached for potential remixes.
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