I am assuming that if I choose Barb Dado for construction, the dado is still cut first using the fit and clearance settings I would have for blind dado and then the barb dado is a secondary operation so I can expect a little more machining time for the barb dado?
Actually, the barb dado tool will perform entire machining process for dado in panel. For barb dado setup, the eCabinets software requires that you select the construction setting “Barb Dado”. Then, in the Control Nesting Software, you must setup an operation tool for Rout/Dado and give it the Name “Barb".