[Too Many Projects]

I lay those on a 4 ft piece of 1x4 board and SLOWLY, GENTLY push the ends down and work it all by hand. The mild steel is very pliable, but if you bend it quickly and go too far, it can work harden and be less agreeable to bend back. I, also, have a hand bender with the correct size wheel for the tubing that I use for any sign it will kink at the tightest curve at the center. Patience and care will get it as straight as it's going to be.

If you bought the stainless version, good luck with any method you use, as they don't bend easy and, in my experience, refuse to cooperate with getting very straight.