Thread: D. Millerson & Sons broom razor.

Like Martin says probably 2 layer of tape and a marker. That being said you're heading into new honing territory. Let the blade shade shape dictate your honing strokes. Simple diagonal x's and such rarely work for me on wedges, I nearly always end up using some sort of swoopy, heel-leading stroke, rolling a little as I go and pulling the tip around. Experiment and have fun.