Your success is most likely due to your aluminum welding skills.
I have none... My welding buddy does not weld aluminum very well but he tries
This may be over kill... then again maybe not... My adapter is only 1/4" thick...
I'm sure Larry, Motorrad, or some of the others here could do it but I have to make due with what I have to work with.
I even thought about using my clutch cover as the fixture but decided it wouldn't be stable enough... Again, I'm sure this is over kill but I want to give this project every chance of success.
I have 3 clutch covers that need to be fixed, I'd like to be set and ready to go from the very first try.
Who knows, perhaps I'll offer a finished product if I get good enough so as to bring down the cost