Parametric Modular Structural Block - Scary Creek XL

Design a fully parametric modular structural building block that will serve as the master platform for the Scary Creek XL Modular Block System. Do NOT create a standard CMU, cinder block, retaining wall block, or copy any existing commercial block. Create a new structural block optimized for future modular development. Overall Dimensions Length: 18.0 in (457.2 mm) Height: 12.0 in (304.8 mm) Depth: 8.0 in (203.2 mm) Design Requirements Create a clean, modern structural block with: Overall rectangular shape Two large rectangular hollow cores One centered structural web Uniform exterior wall thickness Large internal corner radii inside both hollow cores Perfect left/right symmetry Flat front face Flat rear face Flat top surface Flat bottom surface The design should appear engineered, clean, strong, and optimized for future revisions. IMPORTANT This model establishes only the master structural platform. Future revisions will add: Top interlocking geometry Bottom interlocking geometry Decorative stone-face insert system Mold features Corner block variations Half-block variations Specialty architectural versions DO NOT INCLUDE Stone texture Decorative faces Split-face texture Interlocking features Insert pockets Handles Logos Lettering Chamfers Decorative grooves Draft angles Mold components Alignment keys Fasteners Assembly hardware Output Generate a fully editable parametric model with a clean feature tree. Export: STEP STL

Parameters

Every value above is a live dimension. Open a model like this in the editor and each one becomes a slider you can drag before exporting.