Any ideas what would cause this? I dyed (Fiebings pro dye black)a bunch of pieces of veg tanned and the rest came out great but both pieces that I tooled and dyed

Any ideas what would cause this? I dyed (Fiebings pro dye black)a bunch of pieces of veg tanned and the rest came out great but both pieces that I tooled and dyed

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ELW Tooling Leather Vegetable Tanned 6-7 oz. (2.4-2.8mm) Heavy Thickness Weight Size: 12x24

ELW Tooling Leather Vegetable Tanned 6-7 oz. (2.4-2.8mm) Heavy Thickness Weight Size: 12x24

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