Moosemoose,
Have you checked Kennym's website? He grinds and sells excellent lams out of many different woods and his prices are not out of line.
He is so humble that he didn't direct you to his website but gave you assistance on how to do your own, instead. But, I will blow his horn for him as I, and many others on this forum, are happy customers of his products.
Do yourself a favor and at least check out his site (click on his avatar) to see if this will be a better option before you spend too much time making saw dust.
BTW, he, also, stocks SmoothOn Glue and fiberglass.