Re: Potentiall gotcha with the cheap Chinese DRO's
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Bryce,
Maybe I'm not understanding what you have doen, but you have two? seperate pieces of magnetic banding? If that is so, you can not get accurate measurements as the "pole" distance on the tape is specific. There is no way to join two pieces of banding and have it work properly. You might be able to put a pieceof continuous banding down and cut it afterwards, but I suspect that would be problematic as well.
Only times I have seen problems with the mag banding I use/sell is if someone get a magnet too close to it and scrambles the magnetic signal of the banding.
Brian Lamb blamb11@... lambtoolworks.com
On Monday, March 31, 2025 at 03:55:19 PM MST, imran via groups.io <imranwoodshop@...> wrote:
I guess I am trying to ask if the issue occurs at any place along the path or in one location? You can zero it anywhere and check if it provides incorrect displacement.
Double check that the read head is not loose and distance and angle with respect to the tape is within spec. If you have another piece of tape you can check the read head against it however if it is only off by 1 mm that could be hard.
I have 4 DROs (3 M503) and all have the SS tape on top of mag tape with no issues.
On Mar 31, 2025, at 6:37?PM, Bryce Comer via groups.io <bryce@...> wrote: ? Hi Imran,
No the zero'd position seems to be exactly the same every time. It's either side of that point that it drifts out. I have tried using a Starret measure stix on the magnetic tape before and found the reader didn't read at all, so wondered if the metal tape was the issue.
Regards,
Bryce
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https://www.brycecomerwoodworks.com/
https://www.youtube.com/channel/UCHdrRaAZd_pOa7wwbdNPUEw
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