: Michael, Mike, Bill, I am always amazed at the expertise I find on this
: board. Michael I once used Hydro Chloric acid for etching a design so I’m
: vaguely familiar with that. Seems we wore goggles and heavy rubber gloves.
: Mike the tubing I’m using is called telescoping aluminum tubing and was
: really hard to find online in sizes that didn’t run the shipping well over
: a hundred dollars. It has an overall tolerance of .009 between the two
: tubes sizes that wouldn’t work with the heating cooling idea. Bill the
: first thought that came to mind was I going to sand with thinned epoxy as
: you suggested but the grit left inside the tube in the sticky epoxy
: solution would be hard to get out, and it doesn’t take much grit to seize
: the tubes up. So I will go with sanding one section at a time and
: immediately get that section epoxied together before doing the next
: section.

: Thanks guys I’ll only get one shot at this and didn’t want to mess it up.
: John

Hi again John,

Yes you have to use fairly fine paper (cloth actually) to do the sanding with epoxy. Luckily once you've done it and the epoxy is set up, that surface can be further sanded without problems.

Bill H.