Really, I dunno WTF you're all on about. We are discussing an instrument built almost 200 years ago. No PTFE, no optical fibers, no silicone oil or anything like that was available back then! Yet here's everyone falling over themselves suggesting 21st century technology for something the people who built the original probably didn't even think twice about.
I'd still say waxed silk, as back then this was commonly used as insulating material. But the catgut (actually mostly made from sheep intestines) suggested earlier is also a strong contender. Met vriendelijke groet, Rob Klein verstuurd vanaf mijn smartphone Op 24 jul. 2019 20:21, om 20:21, ed breya <[email protected]> schreef: >If you can find (or draw your own) pure polystyrene filament, that >should work very well. Someone suggested optical fiber - this should >work very well too, in the right conditions. You'd want bare glass >fiber, with no protective plastic cladding, then thoroughly clean and >treat it with a silicone oil like Dow 200. Glass isn't really all that >great an insulator (in an extremely high impedance context), due to >surface effects, so a silicone treatment helps a lot. > >Besides optical fiber form, just regular fibers of glass should be >available, in different sizes and alloys. It may be hard to find it in >small quantities though. > >PTFE should also be available in fiber form - somewhere - since it's >used for making meshes, filters, separators, and screens for chemical >process applications. Someone must produce the raw fiber stock that >goes >into these sorts of things. Again, finding it in small quantities could > >be problematic. It's best to use virgin PTFE if you go this route. > >Ed > >On 7/22/2019 11:16 AM, Dr. David Kirkby wrote: >> I have been discussing with some friends about the Oxford Bell with a >view >> to making one. One guy can not believe a battery can last 175 years. >> >> Anyway, I was wondering what would make a good insulator to suspend >the >> ball. I thought of nylon fishing like, but can anyone think of a >better >> insulator? Obviously PTFE is a good insulator, but it’s not exactly >> flexible. Nor is sapphire. >> >> Dave > > >_______________________________________________ >volt-nuts mailing list -- [email protected] >To unsubscribe, go to >http://lists.febo.com/mailman/listinfo/volt-nuts_lists.febo.com >and follow the instructions there. _______________________________________________ volt-nuts mailing list -- [email protected] To unsubscribe, go to http://lists.febo.com/mailman/listinfo/volt-nuts_lists.febo.com and follow the instructions there.
