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		 numbskull: 
 
go on amazon (or whereever, amazon seems cheapest) and get a "fine" bandsaw blade, cuts a perfect lip slot every time, and leaves hardly any flack when cutting ends off plugs too.  
 
I use whatever I can find to put in the slots, piece of cardboard, one of those subscription papers from a magazine folded in half, etc. make sure to pull them out once the epoxy stops running (about an hour or 2 after you coated them). 
		
		
		
		
		
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