Tearing toilet paper on shabbos
In שו”ת מנחת אשר ח”א סי’ כט אות ב the Rav seems to say that it is מותר to tear toilet paper on Shabbos. It that his שיטה למעשה?
The Rav’s intent there is that it does not involve the melacha of מחתך. However there would still bea problem of קורע. In the above tshuva, there is no קורע issue as the tearing is totally destructive. However with toilet paper the tearing creates a useful item which is prohibited. There is a dispute in the Rishonim if this korea, which is productive but not to prepare for sewing, is a Rabbinic or Biblical prohibition.