So this is a metalworking question related to this. I made a brass part to fit in the place of the missing section. I drill and tapped it 6-32 on my little lathe. Problem is, my hi speed steel cutting tools, center drill and drillbit and tap won't touch the needle bar with out going dull, and even if I had a carbide cutter, (which I don't) I'd still not be able to drill and tap it. So what do I need to do, heat it cherry red and dip it in water, machine it, reheat it and let it cool slowly?[ATTACH=CONFIG]477687[/ATTACH]