Thank You Coup. I've wracked my brains for quite a while trying to get the rounded corners on my homemade bumper like a chrome bumper would have. This is my solution; splitting a piece of square tubing. I really should have used a 3 1x2" tube but I only had a short chunk of that size. This one is only three inches across. Anyhow, I've been orange peeling the ends of the half tube so it will look like the real thing, [I hope]. It's all welded up, but one curve is not ground down yet, so no picture.
The weather report said it would warm up in the afternoon today, so I put cardboard in front of the radiator on my daily driver truck and headed to town for parts. It warmed up to -33C*, [the wind chill took it back down to -40C*or F*]. I got a couple of lengths of 1/4" brake line, and some other stuff and came home. The picture shows the long brake line strung along the outside of the frame, and I have a shorter one on the inside going back to where the rubber line goes to the rear axle. Now I can go forward again, on the running board and fender.