Hey Lowboy. Yup, if the hole is cut properly, any screw will work! I have a SS tube that I've never tried because I've never had a tube crack due to the juice I was using. Just lucky I guess. That and I don't know if I could get used to not seeing the juice level. Like CG said, I guess you'd just get a feel for when the tank needs filling after a while. I have cobalt drills so I might try to make a fill port in the SS tube later tonight. I wonder if I can find a cobalt hand tap?
Edit: This will work. http://www.grainger.com/Grainger/GUHRING-Straight-Flute-Tap-2TMG7
Let us know how it works out Pete. I knew you and Dino would be all over this!
Sent from my Samsung Galaxy Note LTE