Being 3D printed, it might be possible that you don't need any coating at all, depending on the choice of filament. I was thinking of TPU, but not sure of its resistance to petrol.
However it sounds like you might know all of this. Another thought is that with a coarse Z height, say 0.28 (a Cura setting) that the voids in each layer, might offer some form of oil retention and subsequent dampening for the impact of closure of the reeds.
You can be our experiment. Looking forward to your durability test results tomorrow.:![]()
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