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Metalworking (rec.crafts.metalworking) Discuss various aspects of working with metal, such as machining, welding, metal joining, screwing, casting, hardening/tempering, blacksmithing/forging, spinning and hammer work, sheet metal work. |
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#1
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repairing a broken aluminum casting
I adapted a technique used by guys that repair boat propellors with TIG to
repair a broken casting. http://users.goldengate.net/~dforema..._mount_repair/ |
#2
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"Don Foreman" wrote in message et... I adapted a technique used by guys that repair boat propellors with TIG to repair a broken casting. http://users.goldengate.net/~dforema..._mount_repair/ Nice repair, Don. Harold |
#3
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I adapted a technique used by guys that repair boat propellors with TIG to
repair a broken casting. http://users.goldengate.net/~dforema..._mount_repair/ Good job, Don. Sure beats duct tape and JBWeld G. Must be nice to have a TIG.... Ken. |
#4
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Thats usually how a prop is built up just keep laying down a bead on a bead till its got sufficient material to reshape. Must be somnething about all these fishermen out there. I have a good friend who just bought a big bucks bass boat and top of the line trolling motor setup, and he too came to me with a broken mount and those words that it broke but he was not saying much at all how it broke.......especialy since it was only in the water an hour or too tops when it decided to break.....I wonder if those manufacturers are using a water soluable alloy that causes these defects? ;-) On Thu, 30 Jun 2005 01:12:56 -0700, "Harold and Susan Vordos" wrote: === ==="Don Foreman" wrote in message ouse.net... === I adapted a technique used by guys that repair boat propellors with TIG to === repair a broken casting. === === http://users.goldengate.net/~dforema..._mount_repair/ === === === === ===Nice repair, Don. === ===Harold === ============================================== Put some color in your cheeks...garden naked! "The original frugal ponder" ~~~~ }((((o ~~~~~~ }{{{{o ~~~~~~~ }(((((o |
#5
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"Don Foreman" wrote in message et... I adapted a technique used by guys that repair boat propellors with TIG to repair a broken casting. http://users.goldengate.net/~dforema..._mount_repair/ Nice job Don. I just repaired the lower section of a '64 Evinrude outboard. I think they call it the stabilizer fin. It's that part just above the prop. The front round part was broke and so was one of the sides. I added new pieces, but I used a mig welder with an aluminum spool. After adding a few weld beads I dressed the weld with a grinder. Took a bit to weld to the thin cast aluminum. I figured if I screwed it up I wouldn't loose anything. Wish I'd taken pictures of the before and the after. B |
#6
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Nice job! One more reason that I just have to have a TIG :-) Could
this be done with OA or MIG? Bob |
#7
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Don Foreman wrote:
I adapted a technique used by guys that repair boat propellors with TIG to repair a broken casting. http://users.goldengate.net/~dforema..._mount_repair/ Nicely done, I'll remember that technique. John |
#8
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On Thu, 30 Jun 2005 09:35:09 -0400, Bob Engelhardt
wrote: Nice job! One more reason that I just have to have a TIG :-) Could this be done with OA or MIG? Bob I would think it could be done with O/A, though it'd take a while. It might require periodic cleanup of spent flux to avoid inclusions. It would seem to be an obvious candidate for MIG, but prop weldors seem to prefer TIG. The only reason I can think of is better control of puddle and rate of deposition, so perhaps less cleanup with the grinder. Roy? |
#9
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Don Foreman wrote:
I would think it could be done with O/A, though it'd take a while. It might require periodic cleanup of spent flux to avoid inclusions. Replace "might" with "would". I did a build up on a broken Al part years ago before I had TIG. Took damn near forever. Putting down another bead without power wire brushing the spent flux off was a no-go. I also think, mind you I'm not a pro, that you really want the independent control of heat and fill that you get from TIG. I had quiite a talk once with a prop rebuilder and he said that MIG doesn't cut it. It would seem to be an obvious candidate for MIG, but prop weldors seem to prefer TIG. The only reason I can think of is better control of puddle and rate of deposition, so perhaps less cleanup with the grinder. That was one very nice fix, Don. Would a slight taper on the former pin have made extraction easier? Ted |
#10
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On Thu, 30 Jun 2005 18:49:59 GMT, Ted Edwards
wrote: Would a slight taper on the former pin have made extraction easier? Ted Yes! Good idea! |
#11
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Yeah, Don. I wanna come up to your place and work for free! Pleeze.
Pleeze. Huh? Can I? Can I? Bob Swinney "Harold and Susan Vordos" wrote in message ... "Don Foreman" wrote in message et... I adapted a technique used by guys that repair boat propellors with TIG to repair a broken casting. http://users.goldengate.net/~dforema..._mount_repair/ Nice repair, Don. Harold |
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