Creating bronze sculptures with internal armatures requires a blend of artistry and engineering. One of the most widely used techniques is the lost-wax casting method, where a wax model is encased in a ceramic mold, melted away, and replaced with molten bronze. This process ensures intricate details and structural integrity.

Another common approach involves constructing a metal armature, typically made of steel or aluminum, to support the sculpture's weight and prevent deformation. The armature is often wrapped with clay or other materials before the bronze is applied.

Direct metal construction is also popular, where bronze sheets or rods are welded or forged around an internal framework. This method allows for greater flexibility in design and is often used for larger, abstract pieces.

Lastly, some artists combine these techniques, using a hybrid of armature-supported clay modeling and partial lost-wax casting to achieve unique textures and forms. Each method offers distinct advantages, depending on the sculpture's size, complexity, and artistic vision.