Re: [CAD_CAM_EDM_DRO] water level ( was Re: Aligning Rails (or ways) on CNC router

turbulatordude wrote:

> If you want a more accurate water level, get a glass tube from a
> hobby store, probably a foot length is common. 3/8 would be about a
> good size. don't go smaller than 1/4, and 1/2 is not adding anything.

Well, this may be sufficient for a wood router. it certainly is no
substitute for a master precision level, which will easily detect
the thickness of a single hair over a lever arm of a foot or more.
Without exotic attachments, I doubt you can do much better than
1/16th of an inch. If you are just concerned with getting the ends of
the rails at the same height, that may be almost good enough.
But, if you want to look for a hump or sag in the middle of the
rails, the water level just isn't sensitive enough.

Jon