Rinse oak cubes?

[tonymark]

A friend gave me a Bourbon Barrel Porter kit with 2 oz of medium toast oak cubes included. The kit instructions said to soak cubes in 16 oz of Maker's Mark for 1-2 days. I noticed the cubes had some carbon dust on them, but just tossed them in 8 oz of Makers (16 oz seemed overboard for 5 gallons) The Makers turned very dark and now I think I should have rinsed the dust off the cubes. Should I filter the bourbon through a coffee filter to remove the fine carbon particles or does it really matter? I am concerned about the carbon dust making the beer feel like charcoal on the tongue.
Thanks for and insight.

 

[arnobg]

Are you sure the carbon dust you're referring to isn't "toasted oak" color? I just opened a bag from that same kit 2 days ago and they are charred, but they're supposed to be for the flavor.