hans wrote:I meant for instance a Teflon sheet, like it is used for covering tins in an oven. That is fairly thin. It would need to be glued inside the barrel, which may be tricky. And it may not provide enough elasticity, so the tenon needs to be just the right diameter. Teflon is actually PTFE, it is a DuPont's brand name. Does anyone shout health warnings about use of PTFE tape in plumbing?
Yes I think that would work. You seem to have the issues right. Gluing probably is the issue as Hoopy Mike says. There has to be an accepted way to bond teflon to aluminum.
I do have some delrin that is combined with teflon. I bought a tub of cut-offs some years ago. It makes slick slides and slippery plugs but I don't use it for whistle I make for others anymore.
I grew up in the state of DuPont..er, I mean Delaware. I think the state moto was "Better Living through Chemistry". DuPont pretty much owned the state back then. Half of the households in my neighborhood were owned by DuPont employees. Teflon and the rest of DuPont's catalog were the wonders of our lives in the fifties and sixties. The area where I grew up has teflon contamination everywhere according to some. No one in DuPont or Delaware cared about long-term health effects. And yes, many folks are really touchy about the use of teflon, even plumber's tape, for use in anything that could be ingested. And we do put whistles to our lips. But then aluminum is on some people's lists of a material to avoid too. Thank heaven there is nothing in exotic woods that give people any health concerns.
Feadoggie
I've proven who I am so many times, the magnetic strips worn thin.
