[ATM] Elgin machine turntable to stroke ratio

[hermit]

I used two identical motors to drive my machine.  Worked out OK.  
Whatever you build, you will end up learning to use it and probably 
tweak it here and there.  I gave one fellow atm 3 ice maker motors and 
he used the third to turn the tool!  So, I would say this ends up about 
the same as "Grind more, worry less". ;)  Doing is better than being 
paralyzed by design fear problems.

Ken Lowther

Christopher Dalla Piazza wrote:
> I'm getting ready to build an Elgin machine and have found an appropriate 18 
> rpm motor for the stroke rate but I'm reading that it is best to have the 
> turntable turn faster, 2-3x the rate of stroke.  I'm thinking that you'd 
> avoid edge troubles with this setup.
>
> I can't figure out how to utilize the same motor to drive both the stroke 
> and the turntable without some sort of gearing or belt mechanism and at that 
> point, I'd rather just get two motors.
>
> If I use the same motor to drive both, I'll end up the other way around, 
> about 2-3 strokes for each rotation of the turntable.  I'm thinking this is 
> closer to the way I'm polishing by hand right now.
>
> So, does it really matter that much?
>
> I'd rather have something simple unless there is a real benefit.
>
> Thanks for any suggestions!
>
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