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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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Lawnmower box repair
On 1/16/2012 4:48 PM, Christopher Tidy wrote:
Hi folks, It's been a while since I visited this group. I have a couple of questions. I have a large steel grassbox from a lawnmower, over 30" wide, that I want to repair. There are some fatigue cracks in the box from vibration, but the larger problem is rust holes in the bottom. I don't have a MIG welder, so I want to repair it using stainless pop rivets (for which I have the right tool). Clearly the box has been repaired once before, and rusted through a second time, but only in the bottom. Is it a dumb idea to think of trying to repair the bottom with a sheet of 1 mm stainless, for permanence? I have some cobalt drills that will make the holes, but will SS sheet be so stiff that it'll be too hard to bend to shape (right now, I don't have the stainless sheet). Also, is there any advantage to using a thick backing washer with pop rivets, when it comes to the vibration resistance of rivets used in sheet of this thickness, or might it make things worse? Best wishes, Chris Was the box not cleaned out well after use? Was it left out in the weather? If this continues, no repair will last very long. Just using ss sheet and not taking care of the remaining steel will just give you a short term repair. Myself, I would use galvanized steel and use pop rivets, like you plan. But, I would also clean the rust and paint the whole unit, then wash it after each use and store somewhere out of the weather. Paul |
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