As the experiments with the lightweight plastic pistons were so successful, I decided to try a further simplification to reduce the moving masses.
I have just received my roll of TPU filament and will now create some test parts to determine whether the flexibility and durability of TPU are sufficient for serious test runs.
Unfortunately, it was only after placing the TPU order that I learnt that PEBA apparently has significantly better elastic properties.
However, a membrane intended for long-term use will probably have to be moulded from silicone rubber anyway.
I hope to be able to present the initial results of the tests on the TPU-printed power extraction units in the next few days.
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