Maintenance Free Crankcase Breather?

[trdodd07]

(05-10-2016 )Hedley Wrote:  I think I'm sticking with my old filter Part Number# "Rawze Told Me To Drill 2 3/8 Holes On The Sides", This one is also a "maintenance Free" filter.

I'm going to try this with the one I just bought last week or so. Do you drill through the filter element itself or through the plastic on the front and back of the filter? I thought I ran across a write up on how it's done a few months back, but that was before the reboot of the forum.