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So it works with glass, ceramics, anything non-ferrous. What if I had a ferrous mug with say a wooden handle, would I still need the iron rod, or would the sys

So it works with glass, ceramics, anything non-ferrous. What if I had a ferrous mug with say a wooden handle, would I still need the iron rod, or would the system not work at all?

wodenokoto 12y ago
Your cup would be insanely hot near the rim, so don't drink from it!