I dont grind my jerkey. i cut it into 1/4 inch strips, put it in the seasoning, leave it in the fridge for a day or two and lay it in the dehydrater. If you want to borrow the dehydrater just say the word. i have not been able to find the cash to buy a grinder, i do have a hand grinder though. i dont do large batches. i take all the trimmings, freeze them in 2 pound packages and thaw and grind as needed.
I would be willing to go halves on a decent grinder, with the sausage attachments. I hear it isnt hard to do yourself.