The קרשים of the משכן were dissassembled in order to be reassembled in a different place.

אב מלאכה

Disassembling or demolishing to rebuild.

מלאכת מחשבת

• demolishing to rebuild on the spot

• take off something shaky to insert something sturdy

• breaking something to use its parts somewhere else

Some תולדות

סותר דרבנן

• breaking just for breaking.

• taking apart an old piece of furniture to discard it

You're allowed to break down a door if a child is locked inside a room.

Making a nice vessel collect dirty water.

Putting something to hold up a bed.

Nullifying a vessel from its use.

מבטל כלי מהיכנו

This is not allowed because you are "demolishing" the ability to use the vessel.

מבטל כלי מהיכנו

• Removing doors from hinges.

• Removing handles.

Other תולדות