Re: ATM Adhesives

[iss@pvtnetworks.net]

Jerry Dove writes,

>       I jumped in and was swearing that Polyurethane glue was the best stuff I
had ever used for gluing surfaces
>together, especially for filling gaps.
>
>       Well, I've had some more experiences with this stuff since then and
thought I'd pass on the information, maybe
>save someone some grief.
>
>       This stuf does seem to glue very well, but I've found that it is also very
brittle. I've used this stuff many
>times and never had any trouble until the other day when I just happened to
drop the pieces.  They separated as it they
>had not been glued at all.  Apparently any sharp rap fractures the joint
very easily.  So for a scope framework, this
>could be disastrous if it were dropped or something.  

I too have been using this glue, but have found from past experience that 
it's best to complement the glue joints with deck screws, so fracture has
not been a problem. The gap filling feature of polyurethane glue has been
an excellent feature.

Andy
Andy Saulietis / ISS Alt-Az-Fp Drive Systems
HDPE Worm Gears, Custom designed mount/telescopes & Machine work
CCD filter wheels & other custom accessories
39 Silver Fox Trail
Cloud Country Estates
Mayhill NM 88339
505-687-3067 Voice
505-687-3021   Fax
e-mail: iss@pvtnetworks.net
32 54 13 N  105 31 44 W 7300' elev