[Shop-talk] Roll crimping an instrument bezel by hand?

[Moose]

Jim,

Doesn't seem like this would be to hard to fab something up to do this on 
a drill press.  The 'live center' would be the biggest challenge, but I 
can think of a bunch of ways to do it.

Don't forget, this is also an excuse to buy a REALLY helpful tool!  8>)

Moose



From:   Jim Franklin <jamesf at groupwbench.org>
To:     Shop Talk <shop-talk at autox.team.net>
Date:   08/09/2024 14:37
Subject:        [Shop-talk] Roll crimping an instrument bezel by hand?
Sent by:        "Shop-talk" <shop-talk-bounces at autox.team.net>



I need to round over the bezel of a motorcycle speedometer after replacing 
the glass. I've seen it done by lathe:

https://www.youtube.com/watch?v=G2ugiz4xVrU

but my lathe buddy has been saying "this weekend" for over a month. I 
don't have anything bigger than a hand drill at the moment. The bezel 
sticks up about 2mm past the face it needs to crimp over, so not much to 
work with, and that's with one hand compressing the rubber seal. 

I tried rolling a big socket over it to simulate the avove motion but I 
couldn't get the metal to deform at all. I feel if I use more leverage 
like with a tablespoon I'll end up stretching the metal rather than 
shrinking it to its smaller circumference. 

I'm sitting on my hands but if we don't get to it this weekend I'm afraid 
I'll lose it and end up ruining it. Any ideas on how not to ruin it? :-)

thanks,
jim
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