Since I feel like this is getting into Laplace Transform territory I have to admit my math skills aren't up to quantifying this. I suspect the maximum deflection at any point before a signal is detected would need to be a higher frequency harmonic of your sketch with a proportionally smaller deflection amplitude at each anti-node. The piezo sensors furthest from the probe point are being flexed by the bed as well as the piezoelectric sensor closest to the probe point but the deflection at those point is larger because the probe point is acting as the input of a third class lever with the closest piezo sensor acting as the fulcrum and the further-away sensors are the load. Hope this think this flex/bed-sagging might be compensated is some part by the leverage of the system. How much the flex in the bed is depends grealty on the diameter of the bed and the thickness. Obviously if you go far enough from one sensor you get in the range of one of the other sensors so you get these lines of similar flex/trigger height. As you probe furter away from a sensor the bed itself would flex more and more before enough force is applied on the sensor to trigger. If you were to probe right above a black dot you would get a trigger height of something in the order of -0.1mm. Usually with under-bed-probing, three probes (black) are used, spaced similarly to the towers. I have made a very crude paint drawing to better illustrate what I mean. Also the amount of deflection is not really the point, just that it is different everywhere and just about impossible to know without testing. Said in Precision Piezo Delta bed Do you know how much the deflection will be approx., when i use the discs in "fully squish mode" (not bending, pressure on the full area of the disc)
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