Had some new fertilizer opener wheels made out of stainless on a laser from a shop who does laser work for us. Couldn't find wheels that were the size I needed with the correct bolt pattern. I know these aren't as hard as what I could buy but they are better than what I had. Also made some new wear pieces on one side of the wheel and scrapers on the other. Found a parts book online that shows all the pictures and that is all I needed.
I took some 3/4" washers and drilled them out to 1", slit one side then took the angle grinder with a cut off wheel and cut a piece of pipe (1 left, 1 right) to press the washers with a bend for the auger. I also made 2 new paddle wheels for the ends.
Welded the washers on everywhere I could to prevent rust in open spaces. I also made 2 bearing holders with brass sleeves, have no idea what was there before it had all rusted away.
When I was a boy, a neighbor planted all our corn--probably 50-75 acres--with a planter like that and a nearly new MF 245. You were big-time if you had a 4 row planter in our area in the early 1980s!