30 minutes later:
Goodness I've posted too much today... Mine is similar to this, but I welded it together. I should have tried it before I welded, but I didn't. This general idea should work if you try it out and make a few changes. I'll try to find mine sometime and post a picture. I love the tool though. It makes easier to start it straight as well as hammering it in perfectly straight.
Materials:
I used a 13/16 ALLTRADE Socket
1/4" Fender Washer, for bottom. Mine was slightly loose, but I welded anyways. Read below about 1/4 vs 6mm.
6mm Washer, for top.
6mm x 1.0 bolt longer than the socket
6mm x 1.0 nut
The reason I used 6mm hardware is because my 1 1/4 star nut has 6mm x 1.0 pitch thread. Make sure you don't force the wrong thread in! I've seen many people use a 1/4", but that is nearly two hundredths larger than 6 mil and has standard thread!
Hopefully this helps someone out. If anyone puts one together let me know how it does! I want to know how it does unwelded!
Edit: Scaled down picture.