Matt,
He said that it would abrade the corners of the carbide eventually dulling it.
Seems to me that carbide is harder than brass, but brushing is an impact shock - so maybe?
I have never had a problem, but I dont see a downside to switching to nylon bristles so...
Mike
Last edited by mike holden; 04-23-2010 at 9:38 PM. Reason: .
From the workshop under the staircase, Clinton Township, MI
Semper Audere!
I really don't either and had the same reasoning as you. But since our dentist gives us each a new toothbrush "free" every 6 months I've got a good supply for the shop.