just a piece of pipe with slots cut in it
I once bought a 20mm copper pipe from eBay and tried this, and the copper just mangled up against the cup, the cup didn't give a crap and stayed put.
Lesson: Use steel, forgo copper.
@Ndeipi started
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I once bought a 20mm copper pipe from eBay and tried this, and the copper just mangled up against the cup, the cup didn't give a crap and stayed put.
Lesson: Use steel, forgo copper.