Guys, looking for some advice.

I have the need for attaching 3/16" and 1/4" diameter sst rod in a grid pattern. Looking for a fast and reliable means to do this. With my limited knowledge of welding, it seems like if I could rig up the tips of a spot welder to have good contact on these rounds, and I could get good force to these tips, I could spot weld these joints.

Any thoughts or am I way off base with this idea?