Thanks Bill. I think the sprinkling of large grain sand is what I'll do. But it wears off so quickly. Epoxy glue might work as an adhesive. I'll try a few ways on practice pieces. 
Thanks very much for the info. Have fun in Ottawa, and send Mike my regards. 
Dan 
 
You still have the Mk 1 in the yard?
		 
		
		
		
		
		
		
		
		
	
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