Much to the dismay of @JohnTC
, I'm going for the gusto and using this gorgeous piece of curly maple as my sacrificial test subject anyway. I figure it will keep me honest. I enjoy the challenge of precision work with hand tools, but patience is not one of my virtues. I tend to take my time when there's more at stake - and I certainly don't want to ruin this. Go big or go home, right?
You'll probably have to zoom in to see my layout marks. This block is 10" long. I measured in 6" from the heel and struck a line at 45° for the bed of the chisel (line at far right). The wedge has a 1:4.5" rise, and was traced out for the second line (middle). Finally, the chisel itself was traced to account for the thickness (line at far left).
The wedge will eventually be skewed along its top edge. A 100° line was struck on the top of the plane body and 80° on the bottom. This is to ensure the wedge cinches really tight.
The components of the rebate plane. I decided to use a 3/4" Stanley Sweetheart chisel. It's decent enough quality without breaking the bank, and I like that the handle comes off easily. 1/2" would've done the trick, but I figured it wouldn't hurt anything to go with a bigger size.
The wedge is from a rough sawn walnut board I have laying around. I cut this piece off just for this project. Planed smooth and sawn by hand.
Finally, the plane body. Grain is nice and straight, even along the bottom. Not 100% parallel, but it's darn close. I'm in my early 40's, so it will last to the end of my days at least.