Re: [CAD_CAM_EDM_DRO] Bridgeport DRO repair?

thefinegunmaker wrote:

>I acquired a bridgeport DRO that doesn't work Is this worth fixing or
>just a good doorstop? Also, If I can fix, or have it fixed, can I
>shorten the scales to fit my Hardinge Mill?
>
>

It depends what the problem is. It may be a very small problem, or more
serious. Old DROs had light bulbs in the scales, and they needed to be
replaced every 6 months or so. Others had dirt get into the scales.
The one thing you can't fix is on some cheap ones there were plastic
sliders that kept the analyzer grating from scraping on the scale. When
they hit, the pattern of Chromium lines deposited and etched on the
analyzer and scale are scraped off.

Does the display box power up? Does it detect motion, but not accurately?

Jon