Today I received in the mail my GreenLee hole saw that I purchased on eBay. I pretty much duplicated Tim Olson's conduit installation. I found some old fiber riser conduit at one of our sites where a fiber vendor removed their exuipment and left about 10' of this stuff hanging from the ceiling. It is great stuff!I fabricated some brackets for supporting the conduit and installed them on both sides of the fuselage to make sure they stayed in place.