Lincoln Welder 10 pound spool adapter

So I lost the adapter to my Lincoln MIG welder. It was painfully obvious when I attempted to install a 10 pound spool of wire and something was amiss. The first iteration of this thing, I didn't fillet the bottoms of the relief channels or make them deep enough for them to deflect enough when mounting the wire spool. It broke off, but a little ABS juice fixed the problem. The second iteration, which you see in the photos, the relief channel is filleted and deeper. Anyway, it's pretty close