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Probe Calibration and Form Resutls

Can probe calibration affect form results?

Using TP20, 3 way (T-shaped) build. Taking about 50 vector points around a cylinder and constructing a cylinder (least squared). Output cylindricity and it measured 0.0024" yesterday afternoon. Calibrated the probe this morning, re ran the same part and cylindercity measured 0.0011". All the other diameters and distances measured were different by 0.0001"-0.0002".
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  • 4) The normal (Std/Med/Ext) force module aren't really designed for star / T configurations. You can get 6way modules that are (but really I try avoid star probes on TP20s)


    In actuality, I'd say it's probably a combination of the above. Have you checked the repeatability (not moving the part) and without recalibrating?





    ^ all this. the TP20 is a limited probe. you've got to find the sweet spot.
Reply


  • 4) The normal (Std/Med/Ext) force module aren't really designed for star / T configurations. You can get 6way modules that are (but really I try avoid star probes on TP20s)


    In actuality, I'd say it's probably a combination of the above. Have you checked the repeatability (not moving the part) and without recalibrating?





    ^ all this. the TP20 is a limited probe. you've got to find the sweet spot.
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