very planar surfaces. That is, the mesh establishes a "glue line" thickness.
The typical automotive review mirror repair adhesive is a cyanoacrylate,
which some want to call, "Crazy Glue." It is a good short-term fixative
adhesive but a lousy long-term adhesive. Typical anaerobic, anionic
cyanoacrylates are moisture sensitive and loose joint strength over time.
A better long-term adhesive for glass is a 3M product, Type 2216. This
is a flexibilized two-part epoxy. It has good adhesion to glass. I've
built many glass electrochemical electrodes using 2216. Between
properly-prepared aluminum surfaces, 2216 will pull 3000 psi in lap
shear tension. It's handy stuff to have around...
Looking forward to seeing you in Banff.
[EMAIL PROTECTED] wrote:
Fellow shadow watchers,
I checked out my half-remembered notion that a special
adhesive is available for fixing car interior mirrors and a visit to Halford's
(UK's largest? car parts retailer) proved this to be so. For £2.99 a small
bottle of the adhesive comes complete with a piece of what appears to be a
fabric mesh. The glass and mirror base are thoroughly cleaned, the adhesive
applied, and the mesh placed in a sandwich against the glass where it must be
held for 60 seconds. I'd guess that the mesh maintains a pre-set thickness to
the joint to accommodate expansion and will also be an effective crack-stopping
agent in the ahrdened adhesive layer.
Tony Moss.
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Best wishes,
Larry McDavid W6FUB
Anaheim, CA (20 miles southeast of Los Angeles, near Disneyland)
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