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Original Message
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| Before you start.. |
| By John - 09/30/2002 4:50:57 PM; IP 142.177.94.2 |
| Hawkrod's approach of "stop-drilling" the crack is good, except that it is very difficult to know where the end of the crack is in a casting. It's not like stop-drilling sheetmetal. If the hole is not at the end of the crack, the problem may come back. Vibration and thermal stress will cause the crack to continue if the hole isn't far enough back. As far as brazing it goes, good luck. Any crud in the crack from the leak will prevent the bronze from adhereing properly despite the flux and it will most likely be a cosmetic and short lived repair. Heating up a casting in a localized area is tricky business. You may start a new crack, or it might just be successful. Anyway, you have nothing to lose as your only really good option is replacement. |
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