Once the drawing is done, one transfers one of each part / view to a file for CAM, deletes any extraneous geometry, and works out how things will actually fit together.
For these mortise and tenon joints, there are a couple of options --- in particular, one would be to make a jig to hold the parts which need tenons vertically at the front of the machine.
The other option is to adjust the geometry of the parts so that when they are cut they are adjusted so as to fit. One option for that is to add dogbones --- wrote up the following for the wiki:
Mortice and Tenon
Cutting mortices and tenons is complicated by using a round endmill to cut what is traditionally a rectangular pair of features --- another consideration is how the parts are presented to the machine --- if a rounded tenon is an option (the part with the tenon is presented to the machine vertically for cutting), then the parts will simply fit, so long as the endmill geometry allows this.
For the other cases, there are a couple of different options:
- dogbones --- for large-scale parts, or when using a small endmill, this is a viable option:
Draw a circle equal to the endmill diameter + 10%, rotate it 45 degrees and then align a node against a corner. The illustration shows an instance where the part is too small / endmill too large for dogbones to be feasible.