Vintage drum gurus and Ludwig purists will want to avert their eyes from this. Anyway I have used plastic wood and similar latex based wood filler when I lived in Germany (I couldn't easily get plastic wood in Germany) to repair bearing edges on my very expensive drums. Those repairs were much smaller but the method worked the same:
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I would mask off the areas around where I needed to use the wood filler, fill in a little higher then I needed, then sand down smooth. I would use a level or any flat surface to make sure I was staying even with the rest of the bearing edge.
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The bass drum had some strange almost wood splinters sticking out of the re-ring. I sanded smooth but it almost looks like the factory used a finish nail to hold it down:
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The inside of the bass drum was very rough along the scarf joint. The seam was pulling apart at places and cracking up at others. I used various clamps, glue, and sanded it all down smooth. It does not look it but now it is perfectly smooth along the seam.
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I had never had to fill in so much on a bearing edge! I guess you could stain to match. There are some German brands of wood filler I used to get that came in a wide variety of colors.
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Tomorrow morning they are off to Anchor drums to level off and cut the reso side edges. The bass drum might need both edges redone though. In some ares the ply separation was so very fine I had to slightly water down the wood glue in a syringe to get it into the voids.
Of all the glues I used Titebond extend was my go to glue. Great working time, very easy to work with and with my test strips the strongest of the glues I was using.