Load Cell Design

Hi all around,

does anybody have experiences with ‘printed plastic’ strain gauges?

I’m up to give that a new try…

See the first try here - i gave up, since i didn’t understood the mechanical part. My design was far too sturdy and i did not use the ‘stretching by bending’ method so my readings didn’t generate any output.

My new approach shall avoid this faults :

This is just a first raw draft. It should use four strain gauges (see red makings) in a wheatstone-brige configuration, ADC will be ADS1220.

But i’m quite unsure, how much bending is really needed to get readings?