I had a lot of trouble squaring my gantry with adequate precision on my CNC router. This meant that small parts were pretty good, but larger parts were noticeably out of square. Here is an outline of the more or less unsuccessful techniques I tried:
(1) I knew my two side rails were very close to parallel, and it seemed that they spanned the same distance. So I tried making sure that each side of the gantry was the same distance from the end. This does not work very well at all. You can...
Squaring the Gantry
(1) I knew my two side rails were very close to parallel, and it seemed that they spanned the same distance. So I tried making sure that each side of the gantry was the same distance from the end. This does not work very well at all. You can...
Squaring the Gantry