RC-Monster Forums - View Single Post - Official Erevo 1/8 scale center diff thread

simplechamp · 08:54 PM

Wow those look perfect MC!

I thought I would mention that I think spot annealing can really do wonders to soften up the steel. I took a small blow-torch and put the very tip of the blue flame exactly where I was going to drill for 10 min. or so. It got a dull red hot, not too bright. Then let it cool to room temp. The carbide drill bit and cobalt tap went through like it was aluminum being worked on. Unfortunately I haven't drilled/tapped the hardened caps without annealing, so I don't have a reference to compare how much the annealing helped. Just going off of what you guys say about the un-annealed steel I can almost guarantee that the annealing will help.

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simplechamp RC-Monster Titanium Offline Posts: 1,884 Join Date: Jul 2009	09.18.2009, 08:53 PM Wow those look perfect MC! I thought I would mention that I think spot annealing can really do wonders to soften up the steel. I took a small blow-torch and put the very tip of the blue flame exactly where I was going to drill for 10 min. or so. It got a dull red hot, not too bright. Then let it cool to room temp. The carbide drill bit and cobalt tap went through like it was aluminum being worked on. Unfortunately I haven't drilled/tapped the hardened caps without annealing, so I don't have a reference to compare how much the annealing helped. Just going off of what you guys say about the un-annealed steel I can almost guarantee that the annealing will help. Last edited by simplechamp; 09.18.2009 at 08:54 PM.