Structural Grid Frame with Extension Tubes

Create a parametric 3D CAD model of a structural frame assembly using 1.5 inch x 1.5 inch square hollow metal tubing with a 1/8 inch wall thickness. Overall assembly dimensions: 14 feet width, 8 feet height, and 1.5 feet depth. The front face consists of a perimeter frame (14ft x 8ft) divided into a 2x2 grid by one vertical center support bar and one horizontal center support bar. All joints are flush, right-angle miter or butt welds forming a flat plane. At each of the 6 intersection points on the grid (4 corners and 2 center-edge joints), a 1.5-foot long perpendicular extension piece of the same 1.5-inch square tubing extends outward along the Z-axis. Every single tubing element features a continuous line of drilled round holes (1/4 inch diameter) perfectly centered along its outward faces, spaced exactly 2.0 inches apart center-to-center (2-inch pitch) along the entire length of the bar. Ensure sharp, clean geometry with precise dimensions and metallic brushed steel texture.

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.