Tinned fish

[00111001]

i'll put my brain to work on that one, if you come up with an idea i'd be happy to hear it!

I'm still stuck with either a sprung loaded platform at the bottom, or a thinner section of pipe placed inside the downpipe with a spring pushing it away from the sides. So it would slow the descent of the tin, but not enough to stop it half way down.

Very hard to try and describe what I'm talking about - so I shall attempt some ascii art

** **
** **
** **
** **
**\ **
** \ **
** \ **
**@\ **

Where:
** = pipe
\ = section inside pipe
@ = spring

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Bollocks, that looked ok when I typed it out.

But you should get the basic idea?