| Forming dies |
| Profiled male dies and bottom dies are used to manufacture gearing without any cutting action. The accuracy of these tools is directly transferred to the workpiece. Size allowances are incorporated into the tool to accommodate for shrinkages. The given spark gaps for electrodes are maintained. Electrodes can be made from copper or graphite.
| | Dies to manufacture |  |
| | Dies to manufacture internal gearing |  |
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