After some average use when I tried to unscrew the china mug it started to unscrew the brass part from the copper base. Since I can't get pliers or something thin enough to stop him, he pulls it out and destroys the screens inside. They also get clogged up pretty quickly from the heat because they're pretty cheap quality. I had a few problems with the argon flow until I realized the screens were no longer letting gas through. I've never had this problem with high quality components. It would be ok if they cost $1-2 for a 3 pack and were completely disposable, but what they currently rate for quality is a complete rip off.
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