CNC conversion AMAT25LV AMAT30LV WM18 advice needed for total novice

[magicniner]

Mike,
In order to avoid unpleasant surprises you ideally need to choose a machine which someone else has converted and documented, this way you will know in advance what will fit where and what machining is required, it's worth spending a little more to avoid any pitfalls.

Spindle wise I suggest you get it running CNC first, chances are you can then make what you need to mount the spindle of your choice.

I'm in the process of converting a Chester Century VS, I bought it because the price was right but I was really lucky with it, there is no major machining of the existing parts required to accommodate 16mm ball screws on the same centre lines as the original lead screws, additionally the existing mounting points for end-float bearings will work for the ball screws.

Nick