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Re: [ATM] recommendation on azimuth bearing surface
Dave Smith wrote:
>Now the question. I need to put a surface on the
>ground ring that will hold up to the abuse of the 40
>to 50 pound OTA rotating in azimuth on three ball
>bearings. A 35 inch OD, 31 inch ID, 1/8 inch thick
>stainless steel donut will set me back $150 to $200.
>
> :o(
>Alternatively, I could use a laminate or smooth
>glassboard composite and route/machine it myself much
>more inexpensively.
>
>
>Dave
>
>
50 lbs. on three ball bearings does not call for 1/8 inch steel support
- that's overkill. How about 18 gauge galvanized sheet metal that you
can cut yourself. If appearance is more important, use stainless sheet
of the kind used in commercial kitchens and certainly available locally.
If the ground ring surface is not hardwood plywood, you might consider a
thin layer of countertop laminate beneath the steel surface. Glue it all
together with contact cement.
Gil Gagne
Port Orange, FL
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