I have no idea why this edger attachment has only one wheel. It makes the depth adjustment pointless.
I made the part from leftovers of the treadmill frame I used for my shrinker/stretcher stand. It wouldn't support much weight, but that's fine, as it only has to support the edger, and it'll do that.
First I made a paper template, then used a plasma cutter to cut the rough shape, and an angle grinder with a flap disk for final shaping. I tried to make it look like it came with the tool. It'll get painted at some point. Probably. The roller blade wheel is temporary unless it works well enough.
I painted it and added a second wheel. Stands up by itself now. Just need to tidy up the axle bolt.
I didn't have any Craftsman red or gloss black, so I went with battleship gray.
I didn't like the gray on this, so bought some red paint yesterday.
Finally found the wheels this needed. They're from a Magna brand folding dolly.