Simple Square E14 Lampshade

See 2023 update below
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I had a slight accident while I was hoovering the bedroom yesterday. As I moved the bed out to vacuum underneath, my bedside lamp fell down and got squashed between the divan and the bedside cabinet.

"Oh, golly!", said I. "My goodness!", "Oh flip!", and so on. Actually, I think I might have been a little stronger than that in my word selection. But you get the idea.

In short, The lampshade had had it. You can see the result in one of my pictures: Sharper creases than a pair of Sta-Prest trousers. Annoyingly, the shade was specifically sized to complement the stainless steel base of the touch operated lamp to which it's attached, and therefore rather difficult to source.

Ah ha! Ya, boo, sucks to you, fate! I have a 3D printer, a reel of translucent filament, and I'm not afraid to use it. One overnight print later, and voila!

I briefly toyed with the idea of going all lithographic with this. But as it's in my bedroom, where nobod