3ds max Polygon Modeling Cutting with Boolean subtraction Now we need to add the other operands. And in the operand parameters we can see that the currently selected operand, wall east, is of the type union, 'cause that is lit up in blue. And when we need add another operand we need to choose an operand operation over here. So we'll click on add operands, and then click on one of the boxes and its defaulted to a union, which is going to add the volumes together. With box01 selected in the list here, switch that over to subtract and now we've got a nice hole there.
