one permanent layer of heat insulating material adjacent said casing and a unitary integrally formed expendable inner lining made of a hydrocarbon free refractory composition and having at least one liquid metal flow control device integrally formed therewith the lining being chemically compatible with the molten metal to be placed in the tundish the invention also comprises the unitary integrally formed expendable lining and the method to form the same application_number US 37717689 A description this invention provides forming of flow control devices in situ in an efficient and cost effective manner by using spray mixes the dams weirs and or baffles are formed in situ at the same time the expendable working lining is formed by spraying fig1 depicts a conventional unpartitioned tundish 10 with a metal outer casing formed by metal walls 11 and metal bottom 12 with a heat insulating lining 13 which is usually formed of refractory brick and is considered to be a permanent lining a conventional inner expendable lining 15 is placed over the permanent lining lining 15 can be a magnesite tundish board or other lining as discussed above the tundish depicted has four nozzles 14 although it will be obvious that the number of nozzles used in commercial practice varies widely in this figure and also in fig2 and 4 the steel inlet stream into the tundish is depicted as is the general flow of the steel in solid lines in each tundish showing the general effect of the weirs dams and baffles to form the weirs as shown in fig2 patterns 20 approximating the shape of the weir and preferably made of a rigid material such as styrofoam cardboard wood or steel are placed across walls 21 of the tundish 22 against the permanent layer 23.