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Hey guys, I figured I'd ask here first to see if someone has experience before trying it for myself.

I stripped the bevel gear splines on both axles in my Tamiya crawler today, which are the first major parts I've destroyed in the entire time I've owned it.

My question is whether or not I can braze the powdered metal gears to the steel axles, and will it hold up to abuse? I can pre-heat either of the parts if needed. I'm not sure what exact metal the powdered gears are made of and their melting point. Any help would be appreciated.

If they are both steel, shouldn't be a problem at all. I would preheat the powdered metal parts to help 'bleed' out any oils in the metal. Probably something like a silver solder would be great, although probably more expensive than the parts you are fixing, ie, not just regular old yellow brass rod with flux on it, but a silver brazing alloy.