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Re: gEDA-user: Quick and Easy solder mask creation



> Where is the paste mask set?  Is it computed from the pad information? 

PCB doesn't currently support a separate paste mask definition.  It is
defined as being exactly the same as the pad size/shape.  What I do is
post-process the .pcb file with a perl script, to produce a new one
with adjusted pad sizes, which is used only to produce the paste mask.

PCB does have solder mask settings, but only as a "this much
bigger/smaller than the pad" dimension.  That means, to do a grid you
have to use multiple overlapping pads with a mask smaller than the
pad, like this:

Element["" "" "" "" 35000 57500 0 0 0 100 ""]
(
	Pad[-11250 -41250 -11250 -41250 7500 2000 5500 "" "4" "square"]
	Pad[-3750 -41250 -3750 -41250 7500 2000 5500 "" "4" "square"]
	Pad[3750 -41250 3750 -41250 7500 2000 5500 "" "4" "square,edge2"]
	Pad[11250 -41250 11250 -41250 7500 2000 5500 "" "4" "square,edge2"]
	Pad[11250 -33750 11250 -33750 7500 2000 5500 "" "4" "square,edge2"]
	Pad[3750 -33750 3750 -33750 7500 2000 5500 "" "4" "square,edge2"]
	Pad[-3750 -33750 -3750 -33750 7500 2000 5500 "" "4" "square"]
	Pad[-11250 -33750 -11250 -33750 7500 2000 5500 "" "4" "square"]
	Pad[-11250 -26250 -11250 -26250 7500 2000 5500 "" "4" "square"]
	Pad[-3750 -26250 -3750 -26250 7500 2000 5500 "" "4" "square"]
	Pad[3750 -26250 3750 -26250 7500 2000 5500 "" "4" "square,edge2"]
	Pad[11250 -26250 11250 -26250 7500 2000 5500 "" "4" "square,edge2"]
	Pad[11250 -18750 11250 -18750 7500 2000 5500 "" "4" "square,edge2"]
	Pad[3750 -18750 3750 -18750 7500 2000 5500 "" "4" "square,edge2"]
	Pad[-3750 -18750 -3750 -18750 7500 2000 5500 "" "4" "square"]
	Pad[-11250 -18750 -11250 -18750 7500 2000 5500 "" "4" "square"]

	Pad[-12500 -7500 -12500 5000 5000 2000 6000 "" "1" "square,edge2"]
	Pad[0 -7500 0 5000 5000 2000 6000 "" "2" "square,edge2"]
	Pad[12500 -7500 12500 5000 5000 2000 6000 "" "3" "square,edge2"]

	)


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