Others have voiced the same concerns. I think to alleve the fray ing, just make a looser "loop". I replace my vision clearo wicks when they start to fray with cotton because I don't have silica.
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I am with you on the being a little worried but there is danger I am sure in almost everything we do. Maybe a post filter in the drip tip? Loose cotton or something just to catch any silica if it actually comes loose? I don't know. I have yet to see any silica laying in the condensation or even in the mouthpiece...
Granted most studies say that the silica used as wicks in our devices will not break down small enough to become permanently embedded in our lung tissue. I am just less willing to take that chance based on how the ends of silica look after being cut with scissors. I have considered putting in a silica core to my SS wicks but I would cut the silica short so that the ends are well within the SS mesh tube. This might lessen the chance of a frayed bit getting loose especially since on the AGA the air comes from the side and then goes up rather than directly past the hidden silica in the SS mesh tube. I will have to think on this a while.
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