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fix this (cast iron)
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<blockquote data-quote="bird dog" data-source="post: 1392944" data-attributes="member: 5381"><p>One way to do it if you decide to try is to get a container large enough for it to fit in and pack it in sand. Heat the whole container on a stove or a fire pit. This will spread the heat evenly over the whole piece. Use a set of tongs to handle the piece. Make a pass and return it to the sand. Repeat as needed. Its a slow process. You still have to use the rods built for cast. You also need to put it back in the sand to let it slowly cool at an even pace.</p><p>This process will also work welding a piece of cast to steel. I have done this a couple times using this process but not on a part that would require as much strength as that part so it would be a last ditch effort. I honestly don't think it can be fixed. </p><p></p><p>Using a torch to heat does not work very well as the cast does not transfer the heat evenly. The whole piece has to be very hot or the cooler part of the part will draw the heat away from the weld area and the piece will crack. </p><p></p><p>Practice before you start. I used some fence spears to get the hang of it.</p></blockquote><p></p>
[QUOTE="bird dog, post: 1392944, member: 5381"] One way to do it if you decide to try is to get a container large enough for it to fit in and pack it in sand. Heat the whole container on a stove or a fire pit. This will spread the heat evenly over the whole piece. Use a set of tongs to handle the piece. Make a pass and return it to the sand. Repeat as needed. Its a slow process. You still have to use the rods built for cast. You also need to put it back in the sand to let it slowly cool at an even pace. This process will also work welding a piece of cast to steel. I have done this a couple times using this process but not on a part that would require as much strength as that part so it would be a last ditch effort. I honestly don't think it can be fixed. Using a torch to heat does not work very well as the cast does not transfer the heat evenly. The whole piece has to be very hot or the cooler part of the part will draw the heat away from the weld area and the piece will crack. Practice before you start. I used some fence spears to get the hang of it. [/QUOTE]
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fix this (cast iron)
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