The chippers are added or removed to the set as required to make a dado of the desired width.
After disassembly, chippers and/or spacers are used to achieve the desired width of the dado set.
The width of the dado cut increases as the angle gets further from the radial normal (90°) to the arbor.
Also, because of their inherent geometry, wobble blades can only produce a flat-bottomed dado at one width setting, which may be a disadvantage in certain joinery operations.
Dado cuts are also less likely to wear down over time, given that they are primarily designed to hold an inserted workpiece entirely still.