"Ed Huntress" wrote in message
...
On Tue, 21 May 2013 19:49:50 -0500, "RogerN"
wrote:

"Ed Huntress" wrote in message
. ..

On Wed, 22 May 2013 06:27:40 +0700, John B. slocomb
wrote:

On Tue, 21 May 2013 10:34:30 -0400, Ed Huntress
wrote:



Right now, I'm not machining anything. I have to replace the belt on
my machine. Jim Rozen gave me some belt material but now I have to
decide how to join it. Do you have any glue recommendations? I can
make a clean scarf with no problem.

Wasn't there a recent thread about joining flat belts?

Anyway, we used to use hot animal glue - hoof and hide - to join flat
leather belts. The length of the scarf is covered (I think) in the
Machinery's Handbook but is several inches.

Yeah, but there's got to be something better now.

I wonder how that polyurethane gorilla glue, or similar, would work?

snip

I use that stuff for a variety of things, including gluing my son's
soccer shoes back together, and it's true that it's somewhat flexible
and has great adhesion.

I just don't think it's flexible *enough*. Something like Pliobond or
Shoe Goo would be more flexible. But I don't know if they have enough
sheer strength.

I'll probably wind up calling some adhesives expert. Cripes, I used to
write long articles about adhesive assembly, but the adhesives I know
about are almost as old as hide glue.

--
Ed Huntress

The best stuff is called Barge cement. It's alike pliobond, but a lot better
on leather. It is what shoe makers use to attach soles.

That being said, the stuff is hard to find (just like shoemakers) and a
gallon would last me 20 lifetimes.

I have used Gorilla glue on my lathe belt and it is still working fine 10+
years later.
I think that, although the dried glue is fairly rigid, it is able to
fracture into a series of narrow rigid joints that roll around the pulleys
like tank treads