Re: ATM Alternatives to Nylon-tipped screws

["clement.focuser" <clement.focuser@verizon.net>]

Hello Chuck,

>  While I wouldn't hesitate to use a Nylon screw for say, a focuser, where
you
> only need it for a temporary grab, I've talked myself out of them for any
> structural applications, including finder ring adjustment screws.  They
> flow, or "creep" with time.  While not a problem with small finders, it is
a
> pain with heavier finders, and of course you can't use them for a
guidescope
> at all.

My guidescope is rigidly clamped to a guide scope positioner I designed.
Only two SS adjustment screws are used. Each screw adjusts an independent
orthogonal axis of the positioner. I described the positioner a few years
ago on this list.

I  hesitate to use a Nylon screw with my focuser and use a collet.

Don Clement
Running Springs, California
Rim of the World