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This is something I do a lot of. First off, why not replace the cutting edge? Lot less work which saves time and money. Dependign what you're using the bucket for, you can sometime lap a smaller width cutting edge under the existing one without causing a problem. If not, you can do a few things one time that will cut repair time later. For an edge that extends past the sides of the bucket, cut the old edge out only to the side of the bucket rather than removing the whole piece. You need not have a true "cutting" edge under the sides and past it as its sole purpose is to stop wear on the sides and corners of the bucket, not for cutting material to be scooped into the bucket. For this reason, you need only replace that portion of the edge that actually is used for cutting. I cut the edge flush to the inside of the bucket sides. Trim the new edge to fit this hole and install as normal. The remaing parts of the existing edge can be handled two ways: 1- build it up with manganese stringers till you have enough meat to protect the bucket sides/corners. 2- use the trimmed portion of the new edge, cut width so that it sticks out past the cutting edge about 1" to 2". Weld directly to the existing porting of the cutting edge, bevel as necessary to get a good joint. The most time consuming part of edge replacement is workign around the sides/corners of the bucket. Doing a replacement as above eliminates the need for the added work. Doing build-up takes forever and usually costs 10 times what a new edge does not counting time. As for teeth, I have to assume you are talking about the shanks, not the caps. If this is the case, you should not be seeing wear on the shanks unless you have a cap problem. Same with these, replacement is best but you can do a build-up as T_Bone said or by using a small diameter rod with low heat. Wire feeder would be best if you have it available.
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