Build or buy hydraulic shop press?

C-channel in the US is generally sized by the weight per foot. If you could list what weight per foot you have, I am sure someone will be able to help you better.Most US c-channel seems to have a very short height on the sides.The hole diameter that is drilled in the sides are just as important of a consideration as the metal since the holes will take away from the metal on the side. If the hole is to close to the edge, the metal could tear.Seems that most of the manufactures of presses use a press brake formed metal c-channel for the vertical sides.I assume this is done in order to get a larger side to accommodate the holes.My metal came from Japan and has very tall sides. I did not calculate anything but my steel is huge compared to other 20 ton units.My metal is 150mm (about 6") x 75mm (about 3"). So i had plenty of room to drill holes.Of coarse not all presses use c-channel for the verticals