The one pint can is in stock _at_ A2Z for $29.99.....
Ken
On Sat, Jun 30, 2012 at 5:40 PM, Lotus 14 <lotus_14us_at_yahoo.com> wrote:
> **
>
>
> All of the people who have contributed to the Duco v Ambroid thing, might
> want to go on line and read the spec sheet from Devcon, the current owner
> of Duco, it gives strengths, cure time, and composition, which shows Duco
> to be a very basic nitrocellulose cement with 20 percent solids. It looks
> very similar to the old Testors "fast drying" and Sig cement.
> Ambroid was originally a canvas canoe repair cement. I used to buy Ambroid
> by the pint can, unfortunately that is no longer available...it saved lots
> of money. Ambroid was also a simple cellulose nitrate glue. The amber color
> is just a dye. The MSDS shows it to be a cellulose cement. There is also an
> Ambroid varnish, which was used as a waterproofer for canvas canoes; it is
> still available, though hard to find. It was really just a thinned cement.
> Actually the cellulose cements are all very similar, but due to hazard
> regulations and difficulty getting raw materials, probably have changed
> formulas somewhat over the years. I doubt there is much real difference in
> cured weight, as all that these glues do is evaporate off volatile solvents
> and leave behind the solid plastic material. Also no matter how "quick
> drying" they are, it still takes about 16 hours for the glue to reach its
> full strength.
>
> As a foot note, while I was in college, many years ago, I was in the
> school flying club. A dismantled J-3 Cub was given to the school, and the
> flying club, along with some instructors in the aviation department,
> rebuilt the plane. We recovered the wings, and I was given the job of
> putting the nitrate shrinking dope, on the wings. What was interesting was
> the consistency of the dope was about as thick as model airplane cement. It
> had to be put on with a brush. I don't know who made it, as the cans were
> government surplus and didn't have brand markings, but I used the left over
> as glue on models, and it worked great.
>
> "Mark F1diddler" wrote:
> Pretty sure if there were much difference in weight/strength between these
> two, it would show up in our building. However, just read an online article
> by a Freeflighter which claimed "Ambroid is 20% lighter than Duco." a
> change according to marketing forces.
> >
>
>
>
Received on Sun Jul 01 2012 - 10:56:39 CEST
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