Reminiscent of the renowned pastry from Bordeaux (France) le Canelé Bordelais, the main design element of this lamp is known to french mechanics engineers as cannelure.
I designed this lamp with the goal to utilize the spiral-vase 3D printing mode to create a beautiful object, with a minimalist, retro, industrial style.
Another alternative could be epoxying some beefy metal nuts around the inner perimeter, mostly towards the bottom.