A staff to whose head one attached a nail [shaped] like an apple is tamei. [If] one studded it, it is tamei. R’ Shimon says: Only when one makes three rows [of nails] in it. But all of [the components], when they are made for ornamentation, are tahor. [If] one attached a tube to the head [of the staff], and the same applies to a door, it is tahor. [If the tube] was a utensil and one attached it to [the staff or the door], it is tamei. When does it achieve its taharah? Beis Shammai say: When one destroys [it]. Beis Hillel say: When one attaches [it].

A builder’s crowbar and a carpenter’s pick are tamei. Tent pegs and surveyors’ pegs are tamei. A chain of surveyors is tamei. [But a chain] used for wood is tahor. A chain of a large bucket [is tamei up to] four handbreadths, and [a chain] of a small one [is tamei up to] ten [handbreadths.] A stand of blacksmiths is tamei. A saw whose teeth one set into the [door] space is tamei. [But if] one turned it upside down, it is tahor. All covers are tahor except that of a boiler.