Jeff, great question.
Yes, you can use the Domino to join 3/4" material at a 45 (miters and bevels). For bevels:
Set the fence to a 45-degree angle, then lower the fence height making sure that it is as far down as possible
. It's important the the fence is completely in it's lowest height position to prevent the mortise from plunging completely through the material. In this position, the mortise will be closest to the inside corner of the miter. Also, it's important to make sure that you position the Domino correctly against the material. The best way to do this is to first set the fence on top of the material, pressing firmly down on the handle, and then slide the Domino into the material. This will ensure that there is no gap between the material and the Domino.
The angle created by the fence is used to index it on the material.
You can use the 5mm cutter and tenons.For miters:
You can index the outside corner of the miter using the pins or flaps on the Domino. For the inside corner, simply scribe a mark across the two pieces to reference.
In the case of miters, you can use 6mm cutters and tenons. Generally, you want to use a tenon that is about 1/3 of the thickness of your material.
Again, the key to using the Domino is to keep firm pressure on the handle on the fence.Angles other than 45:
You can also use it for angles other than 45-degrees using the same methods.