As we repair clocks we find many solutions for problems, both new and old. When it comes to bushings, we see lead, pewter, brass, bone, various plastics, paper, tape, chunks of other clock plates, pins, needles, and who knows what else will we find. Usually one of the above is an old repair often done I suspect by the clock owners. All that considered today I came across something entirely unexpected and entirely new to me. The clock mechanism being repaired is a mid 18th-century American wood works by one of America's earlier clockmaking families. There were some very funny bushings on most of the steel arbors. I pulled a couple of them out. They were unlike anything I had ever seen. I thought the first one was Scotch tape wrapped around the arbor. But, no, it was a seamless semi-transparent round piece of something. So, I tossed it away and started reassembly of the movement, intended for display, not a running clock. The remaining bushings were very tight on the arbor shafts, and the pivots with this material seemingly were intended to rotate in the oak plates. Weird! Maybe I should figure out what this stuff is. Pulled the one out of the trash and I lit a small flame under it. Hmmm, smells like burning hair…..not a burning plastic smell that I expected. Sort of looks like horn material? A long story shortened a bit. This clock movement is bushed using pieces of the hollow portions of porcupine quills. An entirely new solution for me. Yikes! Ingenuity to the next level. I don’t recommend it, by the way; I don’t think it is a good solution. Just reporting the material.