UNcle Jesse,

You are the master of do-it-yourself inventions if you rigged up a coffee grinder. I use mine for dubbing all the time and I find it depends on the materials I'm using. Synthetic fibers like carpet tend to get wrapped up and burn/melt if the fibers are much over 3/8 inch long in a coffee grinder. Natural hairs can become a twisted mess at 1/2 inch so I rarely use anything longer than 3/8 inch lon;usually somewhere between 1/4 and 3/8 inch long.

p.s carpet fibers are great additions to a dubbing mix to change the color and give it a buggy look. You can get the carpet sample boards with all the colors (usually 24 to 30 colors) in swatches of 1X1 1/2 inch for free from most carpet stores when they change lines. Lots of dubbing material with lots of different colors to change your dubbing mixes. Just a thought...

Jim Smith