Re: ATM Grinding machine simplification

["Bill Prewitt" <bprewitt@neo.rr.com>]

I used a simple gearmotor & belt-driven turntable for my 20.
It was fine for grinding, but you can't hand-hold a big pitch lap without
killing your wrists.

With the motor turned off, a spin of the turntable every few minutes randomizes
your hand-polishing nicely.
                  Bill Prewitt

My webpage of telescope making and caving
http://home.neo.rr.com/imaging


> I will probably go ahead with the design I've already
> sketched (with an automated stroke), but would love to
> hear from anyone who has used a "plain" turntable.  To
> be honest, the real appeal of a simple turntable would
> be its small footprint, I'd like to be able to store
> my machine conveniently.
>
> Clear skies,
>
> Adam Perkins
> Covington, Louisiana