Akm (7.62x39) 30 round magazine rough bluprint

Now, i dont know if anyone would ever find this useful, but many many years ago, someone i know had de-milled (drilled out the spot welds, fully flattened out a magazine) & was able to reverse engineer and make their own AK magazine from aluminum. they managed to make quite a few. this was long before 3-d printing was a thing. when i discussed how he managed to do it, he shared this photograph with me.  

Thanks pal for doing the big leg-work on making this a project that can be done from sheetmetal.