Of course ideally you would let it degass naturally since either stirring or nitrogen stripping will also strip out some of the volatile aroma compounds.
If its a stainless steel rod go for it. If its a welding rod save it for welding it will be covered in flux that I'd bet wouldn't bee good for wine.
Yes I bought one at my local homebrew shop or try finevinewines.com he even has videos showing it in use, Ken
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