Without intruding upon the erudite discussion between our two “beki’im”, I have to remark upon hello99’s point that a microwave is “al ho’aish” ….where is the heat? particles being bombarded by waves a “kli rishon” do not make. I would imagine this is the cornerstone of the arguments between those who are mattir a microwave for everything (iytai?) and those who maintain that it is a “kli rishon” (al ho’iash, which makes it even more chomur). I have felt the inner walls of a microwave countless of times just after heating food and never did it show any significant amount of heat.Please explain why this should be ever considered as kli rishon or aish.
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