Re: ATM Etched Teflon

[The Silent Observer <silent1@ix.netcom.com>]

Doug Tanaka wrote:
> 
> A friend is redoing a mount for a Port-A-Ball and has a Teflon ring that he wants to glue into a recessed ledge going around a circle cut out of a piece of plywood.  He doesn't want to use nails or screws.  We're pretty sure no glue is going to hold it in place without etching it first, and I understand Teflon is etched with acid.  Does anyone know what kind of acid is used to make etched Teflon?
> 

It's possible that hot aqua regia (a mixture of nitric and hydrochloric
acids) might etch teflon, but most likely you'd need hydrofluoric acid. 
Please don't try; that stuff is nasty beyond all reason.

If the ledge goes full circle, and the Teflon is a full circle as well,
you should be able to just pry it into place and have it stay under its
own elasticity; that'll go double when you have the ball in the mount,
as it will push the Teflon outward, deeper into the groove.

-- 
It is well to approach all wonders and miracles by gradual stages or
degrees . . .
                                                           Fritz Leiber

Donald Qualls, aka The Silent Observer           NAR # 70141-SR Insured
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Opinions expressed are my own -- take them for what they're worth
and don't expect them to be perfect.