[Michael Hill]

We have done both. We found the tube chassis to be a lot faster to assemble. Unless you have the ability to do precision bending, it's almost not worth it to put holes in your sheet metal first, otherwise your bearing holes or axle holes probably aren't lining up. Our sheet metal fabrication abilities consist of a shear, finger brake and a press brake that we don't really use. None of which allows us to drill holes prior to bending and have the holes line up. Therefore, we had to bend first, then mill/drill out the holes.

The tube/WCD drivetrain we did was all milling out the pockets for the bearing blocks.