Re: Z axis conversion

James Owens wrote:

> Hi,
>
> I have to agree with Jon regarding the use of the quill bolt as the

mounting

> point for the Z axis ball-screw. I have an old Beaver Mill which is

as near

> as damn it a Bridgeport copy and this is the way that the factory

made the

> CNC conversion. They use a box drilled to the front of the head

which

> enclosed the ball-screw. The pulley for the motor is on the top of

the screw

> and driven by belt to a motor hung off the right side, as you look

at the

> machine from where the operator would stand. There is just the

single bolt

> into the quill for the ball-nut housing.
>
> Regards,
>

Wally K. replys:

If your Z drive on the quill is enclosed, how do you know it isn't
loose.

Also if your Z axis does work well do you have the ability to post
pictures of it.