centers of same feature from 2 different probes - don't match

I know this topic has been beat to death...

Here's how I do it. Am I doing it wrong or just wasting steps to achieve the same result?

Qualify the master stylus (1mm=A) at A0B0, answering YES.
Load stylus B (2mm) and qualify A0B0 answering YES.

Now both stylus A and stylus B are calibrated to the same location.

Then load A again and qualify A0B0, answering NO.
Then qualify the remaining angles for stylus A, answering NO.

Then load B again and qualify A0B0, answering NO.
Then qualify the remaining angles for stylus B, answering NO.

(If the answer is I'm an idiot, I'll take this to another thread so we don't hijack the OP.)

You'll get correlating probes but with unnecessary steps, only ever say Yes with one probe at A0B0 (If I was in charge of the setup I'd have MASTER in the file name but I'm not)

Here's why...

When you build a probe file demon knows the nominal size of every component in the build, and therefore the theoretical XYZ offset from the end of the CMM quill/ram to the centre of the Tip.

However, we all know nothing's ever manufactured perfectly, so what happens when you say 'Yes the sphere has moved', is that the demon takes that probe to be perfect. I don't know if you've noticed but when you say 'Yes the sphere has moved', if you view the qualification results it also has a line showing the XYZ position of the Qual Sphere relative to your CMM's home position.
A lot of people only look at the tip diameter and SD of their results, but it also shows the Theo XYZ offset and the Meas XYZ offset for each tip.

If you answer YES, your Meas offsets will equal your Theo offsets (i.e. that probe is 'perfect')

In effect any deviation from nominal in the probe build is actually transferred to the Qual sphere position.

When you qualify your next probe and say 'No, the sphere has not moved' the CMM will know well enough where the sphere is to qualify it, when you view the results you'll notice the Meas deviate from the Theo's, and now the two probes will relate correctly to each other.

I know this topic has been beat to death...

Here's how I do it. Am I doing it wrong or just wasting steps to achieve the same result?

Qualify the master stylus (1mm=A) at A0B0, answering YES.
Load stylus B (2mm) and qualify A0B0 answering YES.

Now both stylus A and stylus B are calibrated to the same location.

Then load A again and qualify A0B0, answering NO.
Then qualify the remaining angles for stylus A, answering NO.

Then load B again and qualify A0B0, answering NO.
Then qualify the remaining angles for stylus B, answering NO.

(If the answer is I'm an idiot, I'll take this to another thread so we don't hijack the OP.)

You'll get correlating probes but with unnecessary steps, only ever say Yes with one probe at A0B0 (If I was in charge of the setup I'd have MASTER in the file name but I'm not)

Here's why...

When you build a probe file demon knows the nominal size of every component in the build, and therefore the theoretical XYZ offset from the end of the CMM quill/ram to the centre of the Tip.

However, we all know nothing's ever manufactured perfectly, so what happens when you say 'Yes the sphere has moved', is that the demon takes that probe to be perfect. I don't know if you've noticed but when you say 'Yes the sphere has moved', if you view the qualification results it also has a line showing the XYZ position of the Qual Sphere relative to your CMM's home position.
A lot of people only look at the tip diameter and SD of their results, but it also shows the Theo XYZ offset and the Meas XYZ offset for each tip.

If you answer YES, your Meas offsets will equal your Theo offsets (i.e. that probe is 'perfect')

In effect any deviation from nominal in the probe build is actually transferred to the Qual sphere position.

When you qualify your next probe and say 'No, the sphere has not moved' the CMM will know well enough where the sphere is to qualify it, when you view the results you'll notice the Meas deviate from the Theo's, and now the two probes will relate correctly to each other.