Thanks mate, yes brass. They make for easier disassembly for cleaning compared to steel which corodes and sticks to the shaft. The baffles are machined out of 2014 T651 (Duralium) which is mispec hard anodized and ceramic ceracoated so should last well. The problem with Duralium is you cant mix it with Stainless steel as they hate each other and the resulting electrolysis fizzes the alloy up like a white chalky Asprin especially once it's full of ammonia and other chemicals from the burned powder and moisture.
Brass is the best material for that jobs longevity.
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