Hi I need to make a waterfall leg on a walnut slab. Live edge on front. I have a beam saw to cut the 45 so that's easy. I don't want to do exposed rabbeted splines at this point. Want invisible joinery. This actually is a desk top so it will wrap down the side of a cabinet so doesn't need a lot of support.
i think I can set my ryobi biscuit jointer to biscuit at a 45 but that's kinda weak. I also don't think it will biscuit very far from the edge on a 2 inch thick piece plus the beveled actual width.
I could possibly do hardwood dowels? Or some sort of metal bracket embedded? I need to pull the joint tight though and even though glued and metal bracket on underside I still think the top of joint will be weak?

Any suggestions appreciated.

Thanks
Craig