I cut the tubes that the bearing sets in. Then I drilled the 3/4 " hole in the attach brackets. The hole needed some filing to elongate it to accommodate the tube. Next I reamed the tube to accommodate the bearing. I aslo made the tube that simulates the bearing. I had to take a little off of it with the lathe to match the bearing.
With the parts ready I put the first one in the jig and discovered the holes did not align on the tabs in the jig. I'm not sure what happened but when I drilled them on the drill press it must have been off a little. I cut the tabs off the side that was off and put new tabs on and re-drilled. Now everything lines up better.
I welded the first hinge in the jig. I was concerned that the tube that was used for the bearing alignment would be stuck after a full weld. I thought about just tack welding and finish out of the jig but I figured the hinge would move too much. I welded as much of the hinge as I could while iin the jig and it was fine. The tube didn't exactly slide out but it came out with some persistence. I welded the round hole after I took the hinge out of the jig.
I was able to get three hinges done. The third one I had my first burn though (other than practice) in the tube. Looks like I salvaged it alright but I'll take a closer look later and redo it if necessary. I figure I was probably getting tired so called it a day...
