Test procedures require that specimens are cast in a number of standard sizes convenient for compressive and flexural strength determination. The engineering tolerances specified for moulds are very stringent and the internal finish of the surface must be of a high order to comply with the recommendations laid down in many International standards. Moulds must not deform during manufacture of concrete specimens if the specimen dimensions are to be maintained.
CM-FC Cube mould is build up by four parts 45 degree wall, save time to assamble or reassamble, we may regard two connect wall as one wall, only want to disjoin two parts together.