Re: Horizontal Planes

Precision levels are the best way. look at how they do pool tables.

LittleMachineShop and Enco both sell levels for under $100 for this
exact purpose.

Extreemly accurate.

Dave


--- In CAD_CAM_EDM_DRO@yahoogroups.com, "Tyson S." <timbercutter@...>
wrote:

>
> Sorry for the multiple list posting, but it is a question concerning
> CNC machines, fabrication, and precision. I have posted a picture that
> I drew which should help explain the situation a bit more. I am looking
> for a good way to check for flatness of a frame that will be the CNC
> table. The image is here, http://webpages.charter.net/aprs/level.JPG
> and basically out of all the possible measurements one can make to an
> object ,this is the only one you can not use a tape measure on. I
> bought an expensive, brand new Starret StaTru bubble level thinking
> that would be the ticket to use by checking both ends of the frame,
> well, other than the pretty shiny red powder coat finish on the level
> it ain't no better than what you could buy at the local hardware store,
> sad. So is there any old school method that they maybe used when making
> aircraft by hand in 1942 or something?
>
> __________________________________________________
> Do You Yahoo!?
> Tired of spam? Yahoo! Mail has the best spam protection around
> http://mail.yahoo.com
>