Hi guys,
	I wound up here thanks to Yahoo and I do have aquestion for you, 
although I do not know if I am in any position to ask you to answer me.  
If I need to sign up for something, could you fill me in.  Anyway my 
question is this:  A via passes through a four layer board, is a hole 
drilled in the ground and the power layers.  What is used to insulate the 
ground and power layers from the solder that eventually will fill this 
hole?  Is it a form of mask?  I thought mask prevented it from the top of 
a layer (i.e. the top of the board), but not the width if a board is cut. 
 Anyway, please get back to me on this.  Thanks.
					Matt
					[log in to unmask]

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