Actually, The Frieze art fair in London. The clip is from Sotheby's TV, which means it's a view from the inside, but it gives some idea of the atmosphere of these events:
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I've just finished restoring and assembling my large etching press -- a six week process involving lots of rust removal, scrubbing with steel wool, and repainting. Here is a photo of the same kind of press from the Chicago Printmakers Collaborative: And here is a short YouTube video of me testing the press, making sure the motor still works after nearly seven years of lying in storage: