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Bunging up a blowhole
| Rik Shaw | 01/06/2019 15:20:03 |
 1494 forum posts 403 photos | I have just finished machining a gunmetal casting for my engine and right on the final cut a 1/16" dia blowhole has been revealed. I am not keen to heat it so silver solder as a filler is not an option. Any ideas? Bronze coloured JB weld would be ideal if it was available. Rik |
| Brian Wood | 01/06/2019 15:58:04 |
| 2742 forum posts 39 photos | Hello Rik If you have some or can still make some filings of the material to mix as a filler into epoxy resin and by making a rather fluid mix, I think you should be able to plug a hole of that size by dabbling it in with a pin or similar and then helping it set with some gentle heat. I am assuming this is a cosmetic repair and not required to stand up to pressure. I have made similar repairs in cast iron with fillers using filings from the casting. Regards Brian |
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All Forum Topics > Materials > Bunging up a blowhole