Here are some photos of the engraving process involved in making blocks for embossing patterns in leather. Boxwood is used here, with the pattern engraved into the end grain, as is common with wood engraving for printing.
The tool here is made from an old file, re-forged, shaped and then hardened and tempered to achieve the proper hardness.The effect used here is a ‘v’ grove, which is fairly easy to engrave in negative but would be very difficult to actually carve the positive, or the result of the embossing in leather as in the following photo.
Another pattern, this time more complex engraving required to achieve the weaving effect of the design. A piece of beeswax is used as a proof of the engraving. This sort of engraving is very interesting because it is the absence of material that is sought after, not the material itself. The deeper we carve here, the higher the relief is on the embossing. It is like the riddle: “What is it, the more you take away from it, the bigger it gets?” (a hole)
And a sample of the embossed leather:









