On Jul 22, 6:31 am, firstname.lastname@example.org wrote:
NEVER...? When the literature refers to a permanent bond, they're
talking about a permanent bond with the typical marine materials such
as gelcoat and fiberglass. 5200 (if you use the recommended metal
primer) is approximately twice the strength of 4200, which can present
problems with delamination of gelcoat or fiberglass. Neither the
glass door nor aluminum trim would delaminate so it would not be a
problem. Sure it would be a bitch to get it off, but 4200 would still
present problems in removal.
As I said in an earlier post, mildew is a concern in this
application. 3M Marine Grade Silicone Sealant is mildew resistant,
has the weakest bond if removal is a concern (still plenty strong
enough for this application), the fastest tack time, is non-sag and
would be a better choice than either 4200 or 5200.
Sorry, not even close.
I notice that links to this site come up often when questions of what
glue to use to glue X to Y are raised. But it's just not a very good web
Pity; you'd think a site called "This to That" would be a valuable
resource to answer such questions. But I'd say it's like a Reader's
Digest of this kind of information, meaning most of what's there is very
common knowledge with little depth. A lot of it falls into the "Duh!"
This is their answer to what to use to glue metal to glass:
Metal to Glass
For the strongest, fastest, and most invisible bond we recommend:
If appearance isn't much of a concern, try:
Maybe you are gluing a rear view mirror.
Whenever you are gluing glass you must consider the visibility of the
adhesive. If the glass is translucent or transparent, you will want a
glue that dries as clear as possible.
Whenever you are gluing metal it's a good idea to clean it first with
steel wool or sandpaper. (Rust never sleeps.)
Before gluing any glass bond be sure that the glass is clean, free of
any oil (even from your fingers) and dry.
Notice there's no mention of silicone adhesives, nor of the problems
with different rates of expansion in gluing these materials.
Not very useful. Sorry.
Found--the gene that causes belief in genetic determinism
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