pizzachang Posted May 4, 2013 Share Posted May 4, 2013 I have some metal items that I need to cold blue. Has anyone bought this chemical locally? I think its selenium sulfide or something similar. Link to comment Share on other sites More sharing options...
cloudhopper Posted May 4, 2013 Share Posted May 4, 2013 The gun shops might have it. Link to comment Share on other sites More sharing options...
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