06-04-2014, 08:21 AM
For wider blades like that, I would just add a couple of 3/4" bars on top of the fixture to create the slot. The screw holes holding them down could even be slotted so the width of the slot could be adjusted for various thickness blades. My fixture also has a key on the bottom so it aligns with the miter gauge slot in the belt sander. Then all I have to do is feed the blade against the belt one end at a time to grind the 20º angle. It's quick, accurate and makes a hell of a strong joint.
Tom
Tom