If the toothed belts do not work I will use nylon
racks. I am just trying to find some workable
alternative to the expensive racks and pinions sold by
Berg and Small Parts. We will see. I will come up with
something.
Tyler
--- "J. Wayde Allen" <[EMAIL PROTECTED]> wrote:
> On Thu, 18 Jan 2001, Tyler Samson wrote:
>
> > I am planning to publish a book on building a
> wooden
> > 8X10 from cheap, readily available materials
> (walnut,
> > brass and toothed belts from thrift store printers
> > that no longer work)
>
> How do you plan to use the toothed belts? The
> Layton camera a-la View
> Camera Magazine design uses a piece of small chain
> and matching sprockets,
> kind of like a miniature bicycle chain. He cuts
> this chain into two
> pieces, lays it in a groove in the focusing bed and
> mounts the sprockets
> on a shaft underneath that.
>
> I don't recommend this method! Yes it sort of
> works, but these gears are
> not designed to work with the chain rolled out flat.
> The pitch seems to
> be too shallow, and if there is any resistance on
> the focusing mechanism
> the teeth skip out of the chain holes. If this is
> your approach I'd be
> a bit leary a
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