Boss hole drilling

07-02-2011, 02:43 PM	#1
Sico40 Newbie   Join Date: Jun 2011 Posts: 3	Boss hole drilling Hi all, how or with what do I make the holes in a 4" boss pipe to accept the 32/40 waste pipes, is there a proper bit or just random drilling to get the hole big enough to accept the rubber bung Thingy..!?

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