Calibration - Standard Deviation exceeds limits

I am having a problem getting my 1mmx27.5 probe tip to calibrate.

I have cleaned the 1mm ruby tip and the calibration sphere. I even changed out the 1mm tip with a new one.

Here is the report:

Probe file=T-PROBE_T1X27_M2 Date=6/17/2013 Time=10:05:21 AM

T1A0B0 THEO X 0.000 Y -5.700 Z 124.320 D 1.000
T1A0B0 MEAS X -0.030 Y -5.615 Z 124.425 D 0.895 StdDev 0.013

Why does the diameter keep coming out to 0.895?

Parents

Rondog over 11 years ago

The 1x27 stylus is notorious for flexing. The shaft is very small.
I quit using that particular stylus exactly because of the flexing problem.

Same here.

If you are using this stylus you need to have the absolute lightest probe touch setting you can possibly get. A TP-2 is nice here because you can lighten the spring tension. A TP-20 has a light force module (forget what it is called).

I ran a bunch of tests with this stylus and the results I saw are comparable to what you are seeing (basically awful). If you need something this small you should use a 1X10mm stylus on the end of a 20mm stylus extension (or better yet, no extension unless you need the length).
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Rondog over 11 years ago

The 1x27 stylus is notorious for flexing. The shaft is very small.
I quit using that particular stylus exactly because of the flexing problem.

Same here.

If you are using this stylus you need to have the absolute lightest probe touch setting you can possibly get. A TP-2 is nice here because you can lighten the spring tension. A TP-20 has a light force module (forget what it is called).

I ran a bunch of tests with this stylus and the results I saw are comparable to what you are seeing (basically awful). If you need something this small you should use a 1X10mm stylus on the end of a 20mm stylus extension (or better yet, no extension unless you need the length).
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