Galvanized is bad only when heated well above the zinc melting point. It's not likely your stove will get near that hot with a pot soaking up the heat. "Hardware Cloth" can be purchased at Home Depot or Lowes. Its a stout wire mesh with 3/8ths inch squares. You'll find it by the chicken and hog fence wire. You can find stainless mesh in some hobby stores where the hobby brass tubing, etc. is. You can also make simple pot stands from coat hanger wire, as long as you aren't trying to hold up a really large pot. Three small tent stakes make good pot stands too.
All the hardware cloth around here seems to be galvanized, and based on the appearance of the hardware cloth after a burn, the galvanization IS burning off. OK for an occasional test with really good ventilation but not something I want to deal with on a regular basis.
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If I wouldn't eat it at home, why would I want to eat it on the trail?
A regular stove does't heat my gavanized stuff hot enough to be a problem. having said that, if you can get the galvanized stuff easy, two minutes outside with a propane torch in a well ventilated area and you can get it all off to the point it won't matter.
I've made stands out of the galvanized stuff with no problem.
However as mentioned - coat hangers work well, - the other thing that works very well is chainlink fence wires - the ones you use to tie the fence mesh to the top poles and bottom rails. they're aluminum and you can get 'em at fencing stores (or in the fencing section of the home despot...
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