Test .blend Blueprint

A 1 kg cross-peen hammer head with Elder Futhark runes ᚦᛟᚱ (Thurisaz-Othala-Raido, spelling TOR) engraved on both flat faces. The design follows the Hultafors Z 1000 profile: rounded square striking face, horizontal cross-peen for pushing metal, oval eye hole for the handle, and a center bulge around the eye for structural strength.

This blueprint covers the complete sand casting process — from 3D-printed pattern to finished hardened steel. The mold splits on the Y axis to capture the rune detail on both flat sides. A sand core creates the oval eye hole. After casting, quench hardening and tempering transform the soft cast steel into a working hammer head that holds up under forge work.

The 3D design file is provided in Blender (.blend) format — the original parametric source file. Download it to modify the rune text, resize for different weights, or adjust the cross-peen profile before printing your pattern.