Are they schedule 40 bulkheads (black) or the schedule 80 (grey I would think)?
Can you post a picture of how far in they go into the hole?
I think you can drill over the holes if need be. You'll need a plant sprayer to spray water as you go instead of the usual trapping-water thing you usually have to do. I've used the spray bottle when drilling holes on glass I couldn't get horizontal like on a tank too big to turn sideways.
No idea how risky it is.
If it's just 1mm short maybe a dremel with diamond bit to grind out the holes to make them large enough?
Or, just use the 3/4" bulkheads but step it up to 1" on either side. Would make for a small restriction but maybe not much worse than a typical 90-degree thing.
__________________
-- Tony
My next hobby will be flooding my basement while repeatedly banging my head against a brick wall and tearing up $100 bills. Whee!
|