On Fri, 26 Apr 2019 09:21:30 -0700 (PDT), Cynic
wrote:

If I'm visualising the thing correctly I'd think about coating the hole in the outer component with release agent then roughening the inner component and coating that with a strong two part epoxy reinforced with fibreglass. Slide it into the outer and let it cure.

I get the idea ... to make a 'fitted' sleeve and if it worked, could
be a good solution. However, (and knowing my luck), I'd just end up
bonding the two parts together! ;-(

Cheers, T i m