Greenlee ruined my brew pot, looking at new kettles

[Dland]

Some of the 1/2 NPT though hulls have a bigger outer diameter than others. Or you could get a 3/4 NPT though hull and adapt down. McMaster-Carr has bigger OD 1/2NPT though hulls than most of the beer equipment places, and they would have 3/4 in also.

I use a 3/4 inch drive smaller socket as a dibble and push though with nuts and washer on a threaded rod or long bolt, big socket as receiver. A slight dibble makes it easier for to silver solder to stay in place while working. I found using a flux designed for stainless works much better than Stayclean or other plumning/HVAC fluxes.

If you have a Turbo Torch, you can also use bronze phosphor or silver brazing rod, ig Dynaflow, StaySilv flux works. Or MIG it of course, but that takes more practice.

Anyway, above methods work on beer kegs, if the kettle's gauge is too thin, it might be different.

 

[LarMoeCur]

I don't see anything that a ball pein hammer, file, and small piece of wood can't fix. Hold a piece of wood to the outside of the hole. Give the inside a few taps where it's pushed in. Key word was TAPS, do not wack it. Work the taps in small circles around the hole it will flatten easily back out. You may have to switch the wood to the inside and taps to the outside. Use the file to clean up the edges and solder it!

Or do what Auggiedoggy said...but do not throw it away. It can be easily saved!