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

Hi Jon,

very little techincal ability is required for +/-0.005"
a steady hand and a good eye and you can get +/-0.002"

with some electronics and the right fluid, 5 tenth's is possible.

Does it replace the master level? no way. but they both work on the
same principle, that the quality of manufacturing equals quality of
accuracy.

Dave

--- In CAD_CAM_EDM_DRO@y..., Jon Elson <elson@p...> wrote:
> 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