Would a square drop box work?

[UKHowie]

Hi
I am in the process of revising my workshop dust collection and will be constructing a top hat thien separator to work with my record DX4000 extractor.
I would like to build a drop box for the separator which would be square or rectangular because:
1/ it's cheap
2/ it's strong (seen a few too many pictures of crushed drums on the forums) 
3/ it's going to fit my space saving design perfectly

So the question is, does a top hat thien separator require a drop box of circular design (like a drum) to work? I know the cyclone can work with a rectangular or square drop box, but am not sure about the thien.

Howie

[widgetninja]

Not an expert here by any means..  but my suspicions on the topic would be:

• CON: Circles are stronger than squares
• PRO: A square would slow the air below the drop slot, which i would think is a good thing

There, a tie for your pro/con list.  Hows that for helping!?!

[UKHowie]

Thanks widgetninja
They are some interesting observations and you may be right.
Maybe unless some more learned person offers their sage advice it might be a case of build it and then suck it and see. ;)
Regards
Howie