[dontlifttoshift]

I promise, you don't need the truss work.

The problem with looking to the internet for frame tables is everyone has different purposes for their tables. If you are building top fuel or nascar chassis you need a surface _plate_ to work off of. This is different than what we need. A fixture table or surface plate needs a level surface, machinists level, and several holes to bolt different tooling to. We are not building space shuttles, we are building prototypes out of cars that usually had a tolerance of plus or minus an 1/8". We need a platform that gives us a solid foundation to measure and build off of, we need access to all sides of the car, we need to be able to adapt, on the fly quickly and easily. If I am building fixtures and tooling, I am not making progress on the car.

The table I pictured is nearly a direct copy of the table that RadRides uses. The first table I had, had a ladder structure on the top made of 2X2 on 2" centers, big gussets at all the legs, crossmembers on the bottom tying the legs together and all of that stuff was just in the way. After using the second table, I realize that you just don't need all the structure.

If you weld your frame to the table, you just increased the strength of both pieces....even if it is just temporarily.

I'll answer the welding question here. The legs are welded on with two welds side to side and the crossmembers are welded with two welds vertically. You want to avoid welding on the corners of the main rails, that is where most warpage will come from. As I stated in an earlier post, I built the second one on the first one. If the center ends up low, that's okay, with adjusters at 6 points, you can jack up the middle and the weight will settle the ends in and you will be level. Less than an 1/8" of pre bow is all it takes.