Jaegers 6" f/10 "GJD" OTA Construction - Knife-Edge Baffles (4th knife-edge revealed - back)
 

Knife-edge for the fourth baffle cut free - 24 (Click to see an enlarged image.)

 
Not bad, not bad at all! It appears that the knife-edge was beautifully formed in the baffle disk by the Bosch laminate trimmer/ router, despite the narrow .5" face! Time to measure the aperture of the opening.