Front one is completely covered, rear is not...yet. I'm closing up holes now in the turning area just for dust and part collection. I have to move the speed control and will then put a full shield on the rear screw. 
Hasn't been a problem yet but I keep the stuff pretty clean.
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					Originally Posted by  ProfessorM
					 
				 
				your a sharp fella. Do you find those exposed ball screws loading up?  
 I hate metal.   
			
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