worn crank keyway

[1chrisapple]

So just curious how does one fix a slight rounded keyway edge.

My solution was to just add a small weld bead to crand and grind/ file very precisely to get a sharp edge agian.

Was this an acceptable repair. I know u r not supposed to weld cast iron with a mig and 75/25 but it was just a 2 second weld

[FestYboy]

are you trying to fix key stock, or fix the crank nose?

[1chrisapple]

Crank nose keyway was rounded a little so i welded and ground it down is this acceptable

[FestYboy]

depends on how you welded it... cast takes a high nickle filler and needs preheated, otherwise it's a cold weld and if you know anything about welding, that's a bad thing.

[jason_]

Yup. Preheat and on cast you need to use 99% nickel rod. I've done it.

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[Tool Maker]

Since you already welded it and shaped it I would say put it together and run it. I've welded a couple of things with mig that should have nI rod. if it works its fine if it doesn't it will let you know. Mac

[1chrisapple]

Ya it wasnt even enough to really get hot just enough to sharpen the keyway back up