Multi Cut facing is a term used for programming more than one facing cut to achieve a specific part length. If the supplied material is too long to program only one facing cut, the amount of material has to be known and separated into two, three, four or even more manageable facing cuts, as necessary. Such situation results in wasted material, but it is a reality any CNC programmer may have to face.

Two main keys to successful programming of multiple facing cuts are based on knowing the longest material stock in the batch, and making a decision as to the maximum width allowed for facing. In the example, the maximum stock to be faced off is 7 mm. Based on a previous experience with the same material, the programmer determines that the maximum facing depth can be only 2 mm. Using a simple math, three facing cuts are not enough, and four are too much. Well, that s not exactly true. Since three face cuts are not enough, four cuts will be necessary, even if one of them will be a bit narrower. It follows that the next step must involve the actual distribution of the four face cuts.