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I don't condone doing this unless the cylinder is cracked and broken, and moldy, which these cylinders are. If a cylinder is moldy and intact, clean and save it, don't even shave it and re-record over it! These broken cylinders gave me an opportunity to learn a few things. This original wax behaves much like the new wax (sodium aluminum stearate and ceresin wax.) we make. Shrink rate is the same amount as our regular wax! The blank came out much the same with the original 1899 era brown wax, as it does with our new brown wax. The only difference is we use triple pressed bovine based stearic acid now, which has a slightly sweeter smell, and a bit harder for most of our new blanks. Original wax (really an aluminum soap) developed for Columbia by Adolph Melzer certainly though smells like blanks we have made in the past with double pressed stearic acid, which you will see us add a little to the compound, for stearic vapor loss. This blank is made with more care than they would have been at the factory, with the molds, which were only warm by the previous blank moulded in the mold. This mold is carefully heated to 340F, and the wax poured in at 232C (450 F). The original moulding process at both Edison and Columbia in the 1890's was to run some blanks in the molds, to warm them up, and remelt the first few rounds, down, thus the molds are warmed for the days production and then the original wax poured in around 340F. The original blanks had little pinholes in the spiral portion of the blanks, many of them, the new casting has none! They used a wooden clamp in the old days and removed the outer mold tube first and yanked it off, then with buckskin gloves unscrewed the blank from the mold, this is accounted in both an Edison OMS sheet for workers, and by testimony in a few court cases where Edison and Columbia employees testified under oath, that this was the process used to cast original blanks. We use an opposite method, that takes longer, by unscrewing the core first, and then allowing the blank to shrink onto a wooden core. Original blank production about 20 minutes a blank, while modern production takes around two hours.