I use split ring hangers from Lowes, you can see it in my build thread starting at post #2 http://www.reefcentral.com/forums/showthread.php?t=2494838
Is this the mount that you used. It looks like it would be allot easier to use than the one I had. Because the screw goes all the way through, you don't have to get it as close when you cut it. Although, if you drilled a hole in the wood larger than the thread, it could protrude back into the board using the mount I did before.
Your build is awesome BTW. I love the t-slot stand.
http://www.lowes.com/pd_301814-3414..._product_qty_sales_dollar|1&page=3&facetInfo=
This:
http://www.lowes.com/pd_301689-3359...L=?Ns=p_product_qty_sales_dollar|1&facetInfo=
This:
http://www.lowes.com/pd_301968-3414..._product_qty_sales_dollar|1&page=2&facetInfo=
and this:
http://www.lowes.com/pd_45479-53911...currentURL=?Ntt=3%2F8+threaded+rod&facetInfo=
Mount the bracket using wood screws, then clamp on to the pipe and measure for the threaded bolt. Use a hacksaw to cut the threaded rod to size. Put a nut on the rod before cutting. That way when you are done you can unscrew the bolt and it will straighten back out the jagged threads from the hack saw. The good part is you can fine tune it a little by running the thread by half turns. You will have a little less that 1/4" of adjustment. So you do have to be pretty precise when you cut the threaded rod.
Where did you get that overflow? I'm pricing around for one exactly like that.
ebay, modular marine is the seller.