Re: ATM: Dobsonian questions

[akkana@best.com (Akkana)]

JP Roberts writes:
> 2. I'm going the make the bearing discs from plywood.
>    If I use Teflon pads on the mount, with what and how
>    should I line the discs?

Iron-on "Melamine edging" (available in hardware stores, intended
for edging particle board shelves) makes a nice bearing surface.

For something as light as a 4.5", though, Melamine on Teflon may be
too slippery; you may find that you need to increase the friction
dramatically to have a dob that remains stable when you change eyepieces.

        ...Akkana