Comments sought on new build: A CNC Router for RC Gliders and Planes

[Washout]

Hi Neil,
.
A quick question (not critising your purchase), as I've been scouting about for milling machines with the same rough size as the Warco Major GH Mill. Does that machine use a round column or square dovetail?
.
Reason I ask is I have also been looking at this as a candidate AMADEAL - AMA30LV Milling Machine - MT3 - Metric | eBay and it does use a dovetail, which from my limited knowledge is supposed to be more rigid?
.
Cheers
.
Chris

[Jonathan]

The column itself may or may not be more rigid - the rigidity gain comes from being able to move the mill head up and down, so you don't need to use the quill (much).