Re: Home made CNC rotary table??

What about backlash in your setup? Do you have much to deal with?

Jeff
http://www.homecnc.info

>
> I have been collaborating with John S over converting Vertex rotary

tables

> - I have one of their 4.25" diam tables, John has one of the 6"

(see his

> earlier posts). They are designed to take the same mounting for an

optional

> set of division plates & indexing arm; whip off the handwheel &

there's a

> boss ready pre-tapped for three 5mm screws on a 30mm diam circle

(this

> normally takes the division plate mounting screws). John machined

up a

> couple of motor mounts that screw on in place of the division

plate - add

> an Oldham coupling & a stepper motor, preferably around 200 oz-in

(I

> currently have a 120 oz-in motor on my 4.25" table - its OK for

doing

> indexing moves, but it would need more power if you planned on

cutting

> during a move. John has a 200 oz-in motor on his), and away you go.

Not

> terribly hard to do.
>
>
> Regards,
> Tony