I'm the fellow who suggested a friction element rather than a lock in the YT comments. FWIW here's a photo of my solution. On my shop-built QCTP I used a screw with a knurled nut affixed in place rather than a stud and knurled adjusting nut. I drilled a hole that overlaps the threads, and inserted a piece of o-ring to serve as a friction element. It works adequately. (I left the square head on the screw so I can use a wrench if the friction is too stiff.) I had to experiment to find a suitable amount of overlap. I don't remember where I got the idea. I think it was a commercial QCTP brochure, maybe KDK. Just another approach to the problem that's worth considering.
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Originally Posted by retirand19
I'm the fellow who suggested a friction element rather than a lock in the YT comments. FWIW here's a photo of my solution. On my shop-built QCTP I used a screw with a knurled nut affixed in place rather than a stud and knurled adjusting nut. I drilled a hole that overlaps the threads, and inserted a piece of o-ring to serve as a friction element. It works adequately. (I left the square head on the screw so I can use a wrench if the friction is too stiff.) I had to experiment to find a suitable amount of overlap. I don't remember where I got the idea. I think it was a commercial QCTP brochure, maybe KDK. Just another approach to the problem that's worth considering.
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