“My bad” - It appears that “mortising” bits now refer to “hinge mortising bits” rather than bits intended for plunging, as would be required for cutting mortises for mortise and tenon joinery. But Amana makes “straight plunge” bits that are included in their Vectric and Fusion 360 tool file data bases.
It hadn’t occurred to me until @Burly’s post that 1/2" cutters could be used in Shapeoko standard trim routers. So, I ordered one and intend to give it a try. I intend to start as shown below, monitoring power and increasing feed rate as I go. Of course I’ll reduce the plunge rate to a more reasonable level too (like 20 IPM).
