Is there any issue with opening a tuna can on shabbos, as far as making a Pesach yafeh etc.?
According to some poskim there is, see Kovetz M’bais Halevi 6 pg, 45, Shulchan Halevi chap.8-8, Megilas Sefer 14-4, Orchos Shabbos 11 ftnt. 61, 12 ftnt.10 in the name of R’ Eliyashiv zt”l. However according to other it isn’t an issue see Binyan Shabbos pg. 128,