I picked up a Timberline Sharpener for Christmas and have used the snot out of it this year. Really like it, but apparently using it in conjunction with a cordless drill is hard on the aluminum inserts. Bored them out to 7/16" and pressed in drill bushing liners. Shouldn't be a problem now 
I have another liner. I may split it and fill in the rest of the hole.
I have another liner. I may split it and fill in the rest of the hole.
