see below
Well, on epoxy fuselages, the mold release can be water soluble, so that earlier suggestion of water and scouring powder is a good one if they used PVA.John Derstine wrote:
snip Secondly, there is rarely enough mold release or contaminants inside the fuselage of a molded fuse to degrade the joint, if in doubt clean with a de-greaser (prep sol or similar) or lacquer thinner before sanding.
I've never heard anyone talk about 3M 5200 in an application like this, but if I wanted to try a flexible adhesive, that's what I'd use. I'd try to have a little space in the joint. The stuff is known for being very hard to remove.Do not use PFM or some temporary flexible glue on a retract, it will come loose.
While EZ Lam and such are good products, for the best results I should think an epoxy meant for gluing would be less brittle, as opposed to one meant for laminating.snip
The easiest (and best) method is to buy a quart size of West Systems or
Fiberlay Pro Glas, or Aerospace Composites EZ Lam and use fumed silica
as a thixotropic agent. 25 -45 minute cure formulas are fine with a
good grade epoxy. This is not something that you won't use all the time
if you are an active modeler, the shelf life is quite long and it is not
so expensive considering what you get for your money in terms of
quantity and quality.
If the fuselage was made from polyester resin, and the wax is thoroughly removed, this can be a very good bond. Not all polyester has wax in it, although putting wax in the final coat ensures it will cure all the way to the outside surface. I have never found fresh, properly catalyzed polyester to be anything but predictable. Predictably, it stinks to high heaven. But if you can stand the drawbacks, it's good for bonding to old polyester. Isopthalic resin (a variant) behaves well and I seem to recall it has somewhat better properties, though I don't remember exactly anymore.snip Polyester resins are a thing of the past, emit waxy residue, and are unpredictable in the long run.
snip
I think I agree with most of the snipped stuff.
Lincoln Ross
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