3D printed WW2 German anti-tank grenade Hafthohlladung 3
The Hafthohlladung (German, lit. "adhesive hollow charge"), also known as the "Panzerknacker" ("tank breaker", an analogy to "safe cracker"), was a magnetically adhered, shaped charge anti-tank grenade used by German forces in World War II, and was sometimes described as a mine.
