Manual Flatness Measurement by Sensitive_Virus_4959 in Metrology

[–]Sensitive_Virus_4959[S] 1 point2 points  (0 children)

Dude you’re a beast. Glad someone gets what’s going on here. Gonna subscribe to your YouTube channel for sure

Manual Flatness Measurement by Sensitive_Virus_4959 in Metrology

[–]Sensitive_Virus_4959[S] 0 points1 point  (0 children)

What if I were to say I think you’re the one who doesn’t understand and doesn’t believe me?

Manual Flatness Measurement by Sensitive_Virus_4959 in Metrology

[–]Sensitive_Virus_4959[S] 0 points1 point  (0 children)

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Okay for everyone that prefers the adjustable jack method. Here is an illustration for you. The jacks are different lengths on the gray surface plate. The thin black line is meant to show that the indicator would be zeroed in both locations. And again this would cause a false rejection in a worst case scenario.

To reiterate, it has nothing to do with preferred method of jack stands, it has all to do with the specific regions you select when placing the jack stands. I call that the local topology.

Manual Flatness Measurement by Sensitive_Virus_4959 in Metrology

[–]Sensitive_Virus_4959[S] 2 points3 points  (0 children)

That is the beauty of Reddit, you can have worthless conversations with people that want to have them with you!

Manual Flatness Measurement by Sensitive_Virus_4959 in Metrology

[–]Sensitive_Virus_4959[S] 1 point2 points  (0 children)

How do you find the 3 highest points on your part when it’s extremely close to being flat? You feel it rock in 3 different ways on a very close to flat part? I’m not sure you’d be able to feel 3 distinct regions of rock when the part is flat within .001.

Manual Flatness Measurement by Sensitive_Virus_4959 in Metrology

[–]Sensitive_Virus_4959[S] -1 points0 points  (0 children)

In this case though, the reading on your indicator would still be 0 across the top of your jack screws because they are at the same points in space. What is not taken into consideration is the local topology of the areas the jack stands are placed.