Was it possible to make the kelim to precise dimensions, or was approximation sufficient: Bechorot 17b
Constructing an imperfect kli: Succah 50a; Sotah 14b
Sculpting the image of the kelim, for non-Temple use: Rosh HaShanah 24a-b
Filling a hole in a vessel with a chunk of salt: Succah 48b
Invalidating the altar if it was missing a section: Succah 48b-49a
Whether kelim could be made of wood: Succah 50b; Sotah 14b
Whether kelim could be made of pottery: Succah 50b