Polyurethane adhesives?

Jewelry Discussion
1

Have any members had any experience using any of the newer
polyurethane adhesives (e.g. Franklin’s Titebond)for metal to
metal bonding for applications where soldering techniques may be
inappropriate? There are may situations where adhesives would be
advantageous (e.g. in dealing with patinated surfaces) without
reapplying heat. Marty R.

Reynard Designs
http://welcome.to/reynard

2

Hi Marty

I have used Franklin's Titebond to bond metal to wood to fix my

jewelers saw frame where the handle kept pulling off of the
frame. It seems to hold very well under lots of use.

Jim

@jbin
James Binnion Metal Arts
4701 San Leandro St #18
Oakland, CA 94601
510-436-3552

3

Marty, I have had some experience using the polyurethane
adhesives last summer when I was building water rockets from 2
liter coke bottles for my son. The adhesive works wonderful on
polyethylene (PET) bottles and will withstand 100+psi, but one
disadvantage of the adhesive is that it swells during the curing
stage. I don’t think it would be suitable for metals…Only woods
and plastics. P.S. the stuff is very harmful to breath! So be
careful when using it. Ken Sanders

4

Many years ago in the Seattle area there was a company that sold
opal triplets that were glued with “polyimid” or "polyamid"
adhesive. I may have the names spelled wrong but that’s close.
Anyway they glued crystal clear and very strong. I believe they
had a forever and ever guarantee. Of course that company seems
to no longer be around. Does anyone have knowledge or experience
using these glues. They swore they were superior to epoxy.

thanks fred

5

Thanks for the input, Ken. I have employed Franklin’s Titebond
(which is also recommended for metals) in minute amounts with
several experimental pieces where the reapplication of heat would
have destroyed underlying patinas. So far, one advantage to the
epoxies is the relative lack of shift with this very tacky
adhesive. The bond seems to be of equal strength and though
there is considerable expansion, I used very little and was able
to clean the edges with a swab of alcohol.

Reason I tried this stuff has to do with a fellow who raved

about it at a show I did last year…and if epoxies are good
enough to bond metal for airplane wings (with great advantages
over rivetting), then there should be a huge range of
applications for lighter items in our field. Marty R.

Reynard Designs
http://welcome.to/reynard

6

Ken, would you please send me, off line at <@bootsie>
directions for making water rockets? My almost-9 year old
grandson would love THAT project!. Thanks bunches and bundles,
Sharon Holt