How To Use Progressive Web App aka PWA On 420 Magazine Forum
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huh... whaddayaknow.... every now and then, I just get lucky. Sweet!
A few other reasons not to use copper...
You can only bend copper a few times. Plastic you can fold, spindle, and mutilate.
Copper would be a better conductor of heat... you might need to insulate it.
Copper conducts electricity... this shouldn't ever be an issue, but accidents happen.
Fittings in copper usually require soldering... pain in the butt, and who knows what's in solder these days. Is it mainly lead?
I'm sure there are many others. Generally, I assume that if everyone else is doing something a certain way, there's probably a good reason.
Cheers