I am going to place an order for ePTFE membranes, likely from this company on Alibaba.
Before I email them to get quote in the next couple of days, is there anyone who wants to join this order? I am based in Greece. I will post your part of the order as soon I receive the membranes.
I am likely going to order about 100-200 for myself. I would prefer the black color, but I am ok with switching to white if color is important for other people.
I am also willing to consider other membranes instead of the one mentioned above, if you have good reason to believe they would perform better.
By the way, I am thinking of placing the membrane on the inside surface of the box, and a single layer of 500-mesh woven on the outer side (https://www.inoxia.co.uk/products/mesh/sheets/500-mesh?fbclid=IwAR2HPEDe7WNJ_FHsB8Oh0-7IjJNBM5vUskUnQVJXbaStMNlbyK8to3hvAEc / instead of the 2-layer NicWax treated suggestion mentioned in another post - here ). Would the combination pose a problem? I am recording at 8KHz sampling rate only. I was thinking that the wire mesh would keep insects away (which have poked a hole in one of the two AudioMoths I have tried - see photo below), while also limiting the amount of water that would linger on the lip of the drilled hole - if I had only the membrane on the inside. Any thoughts?
Looking forward to hearing from interested people.