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Bolt problem on antique wood stove

980 Views 6 Replies 4 Participants Last post by  Half-fast eddie
Hi there!

I have a problem restoring an antique French cast iron wood stove.

As I was derusting it, one of the feet broke loose.

It's the part that was holding it to the body that broke. I guess it's a bold but I am not sure. The reason I am not sure is specifically because I am having a terrible time removing that "bold" to replace it.

Here is a video that describes it: IMG_9261.MOV

I have applied old gasoline on it and let it react for a day, many days in a row. I have tried turning the "screwhead" with a screwdriver, it won't budge. I have filed the part that is stuck in the stove's body to make it flat and tried to turn it with a clamp, to no avail.

The thing that strikes me is that I don't see any "boundary" between what should be the bolt, and the "hole" in which it is supposed to screw. Neither on the stove's body nor on the foot. It looks blended into the "hole", as if it had been welded. I would be very surprised if it was indeed welded in the past, for 2 reasons. First because I wouldn't see the benefit of doing that. Second because I don't see how on Earth one would have managed to do it with the foot in position.

In the video I have already filed around the "bolt", because I was hoping to remove that little "mountain" around it. I removed most of it all right, but it still looks as if it had been welded.

Would anyone have any idea how I could remove the remnants of this "bolt", without damaging the stove any more? Or an alternative solution to getting the foot back into place?

Thanks a lot in advance for your help!
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I couldn't get the link to play, but if the other feet are bolted on it can be assumed this one is too unless it has already been repaired. If you plan to go the 'weld it' route, make sure that the person actually can. It can be tricky to do properly and in my experience, many shops that say they can, can't. Somebody that repairs engine blocks, manifolds, etc. would be a good bet.
 

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Discussion Starter · #5 ·
when steel rust it will actually grow and gets tighter in the hole.
Your best bet would be to grind it off flush and drill it out.
Same for the bottom of the stove but with a smaller drill bit and tap the threads so a new bolt can be threaded in.
Broken Stud Removal in Exhaust Manifold - YouTube
Thanks a lot! I didn't know steel grows when rusting, this would explain it.

Thanks for the idea and the details. That video is very good too, makes it very clear!
 

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Discussion Starter · #6 ·
Thanks lenaitch and half-fast Eddie for the suggestions about welding. I hadn't really thought about it, don't know how feasible that is.

The leg breaking was a consequence of me derusting the stove, and the rust was a consequence of me using the stove to make a gift for my father's birthday. I wanted that gift to be fully home made, thus I would like to fix the collateral damages myself too.
 
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