On 18 Mar 2009 00:02:22 GMT, Jim Yanik wrote:

does epoxy bond to nylon??? I'd not bet on it.

I think I'd glue it back together as best as possible,then use the casting
materials one can find at hobby/craft stores to make a mold and cast a new
gear.

Yes:
http://802.11junk.com/jeffl/pics/HP8640B/
I didn't use any manner of special epoxy. Just the cheapo hardware
store 2 hr epoxy. I've also done it successfully with JB Weld.
Surface prep was degreasing with some alcohol and deglazeing with
sandpaper. However, the 8640B gear in the photo is much larger than
the 3/8" gear in the Exabyte. Unless there's sufficient surface area,
it's not going to hold.

Incidentally, some construction "structural" adhesive is an epoxy and
nylon mix. I'm wondering if I should have used some of that instead.
http://books.google.com/books?id=4MTUnaKjuDAC&pg=PA372&lpg=PA372

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Jeff Liebermann
150 Felker St #D http://www.LearnByDestroying.com
Santa Cruz CA 95060 http://802.11junk.com
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