Modified rather than made... Added a cable hanger to my torch holder...
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Many will tell you not to store a mig torch like that as the weight of the cable stresses the torch neck & can make it loose in the handle!
On the other hand I have been using a piece of pipe welded under the top rail of my bench to hold my torch when I'm welding, similar to you & the torch is still ok!
I saw the idea at an exhaust factory I worked in, every one of the many welding benches had a pipe welded to it for the torch.