What are the halachas of building and destroying in conjunction with כלים (utensils).
(Temporary Ohel) What to do with an umbrella that somebody forgot to close;
is one allowed to pull a thread to tighten a hem, cuff, button, etc. on Shabbos;
removing a board from a Sukkah. Unplugging a sink. Taking out a leaf from a table. Taking off a mattress from a bed. Taking...