Newbie: vertical column Cnc conversion

[cyclestart]

I was gonna get the stepper motor base from Sherline, and they recommend changing the leadscrew to fit the steppers. That's why I though I might get their kit. Is there an alternative?
So what is a breakout board? Where can I find this?

I like the DIY approach, it's educational and usually saves money. otoh it can be expensive in terms of time so it's not for everyone.

It's very common to drive a leadscrew via timing belt and in your application the pulley ratios could be used to advantage.
An example in this link:
Chuck’s X2 conversion – I Hope –

I'm not familiar with Sherlines or how their cnc leadscrew differs from the manual version.

It's should be possible to wire a G250 directly to parallel port. The simplest BOB would be a parallel port cable splayed off into individual screw terminals. Commercial BOBs provide opto-isolation to protect the computer.

[rpovey]

The issue with a pulley setup on the Sherline Z Axis, is that the column isn't very stiff to start with and any additional weight hanging off to one side of it isn't going to help you out any.
The Sherline is designed to machine small parts, probably only weighs 40lbs total, so the steppers are significant additional weight.

I thought the only difference with the Sherline Z Axis lead screw for CNC, was the addition of an anti backlash nut, which Sherline sells separately. Although I could be mistaken.

[jivetin]

Is there a reduction gear mechanism sold somewhere that could be used instead of the pulley system? 1/4 ratio would probably be all that is needed.