Lost wax casting in the casting process are the different types of casting parts, then we will give the casting when forming the repair type, so what was repairing the type we are using what way?One, in the process of lost wax casting, whether small or large parts of machine construction, the modelling of what we do must be in to repair the type of parts after the draw, there are various methods of type, today is four type of lost wax casting method:1, parts after stripping local has soft false place can use a trowel row loose tooling then pounded.2, two wall intersection place has damaged parts can trowel stick on gravel, sand and then touch the gap to make again.3, lost wax casting chunks of sand was brought out to brush on mud water to repair,4, area larger but not deep grooves should be dig out some and again.