Fine Woodworking on Treenails

What Fine Woodworking magazine (Jan/Feb 2001, p.65) has to say about making small treenails or pegs for pinning joints:

• Squaring a drilled hole. Begin by drilling through the leg and tenon with a bit just smaller than the width of the peg. Make sure you don't drill through the other side of the leg. Use a 1/8" chisel to square up the first third of the hole.
• Making peg stock. […cut…]
• Whittling pegs. With the pegs cut into 2" lengths, round over the first third with a small knife. Rounding the ends of the pegs prevents then from splitting the legs.
• Driving it home. After applying a small amount of glue to both the peg and the hole, tap the peg with a hammer. Keep the peg aligned and stop hammering when the peg bottoms out (you’ll hear a change in tone); otherwise, you risk splitting the leg.

So perhaps I do not need to make a pencil sharpener after all! I have been trying to make round treenails, using some variant on the idea of a plane I saw in use on Duyfken; I'll give this simpler idea a go.