This thread is not about SS mesh. I don't like it, it has it's own problems, so don't post anything about it, please. Let's talk about wick materials for attys. Not long ago I found that silica thread gives a needle-like fragments when vaping. Some people made their own independant studyes and found the same problem. The size of needles vary from rather big to small enough to penetrate lungs alveolus and stay there. Big fragments can make an irritating and injuring effect to throat, adam's apple, vocal ligaments, stomach when swallowed. Small can stay in lungs forever or for too long time irritating alveolus, even to clogging it up. Simpthoms are scratching or pain at throat and/or adam's apple, regular voice dissapearing at the morning. Here is some fotos: new wick used wick vapour condensate I found that silica wick may be successfully replaced by a 100% cotton or bamboo yarn. Results are amazing. Just one thing - you must boil yarn for some time (about 10-30 min) before use to wash away any yarn impregnation. Yarn wick has a better liquid transfer rate, gives more fine-disperced vapour which transfers more nic to lungs , better taste transfer, less coil clogging. Yes, if you dried out your wick it will burn, so the only thing it to keep it wet enough. We made a croud test of organical wicks at various types of attys. Lifetime of a cotton wick varies from 2 days to more than 14, depends on use conditions. But in common is not less than silica wick testers reported.