.010" is not deep enough in my opinion. There is plenty of material to work with. I went much deeper (.100") and funneled the beginning of the groove to try any collect oil better. Make the grooves wide. At least .125"
The factory grooved pressure washer already has about .010" grooves in it and it did not work.
Hoop - I coulda sworn I read this somewhere, but what did you use to cut the grooves into your sprocket? Dremel w/ a carbide cutting wheel, stone or what? I'm getting ready to cut these grooves into my sprocket and getting things together - thanks