Engine Cylinder Block with Cooling Fins

Act as a precise Constructive Solid Geometry (CSG) CAD generator. Create a 3D model in millimeters using strictly explicit Boolean Union and Subtract operations with the following exact coordinates: Main Cylinder (Union): Create a central vertical cylinder at origin (X=0, Y=0) with an outer diameter of 70.0 mm and a total height of 78.0 mm along the Z-axis. Timing Chain Block (Union): Add a rectangular box on the left side. Center it at X = -25.0, Y = 0. The box dimensions must be 40.0 mm wide (X-axis), 65.0 mm deep (Y-axis), and 78.0 mm high (Z-axis). Main Bore (Subtract): Cut a vertical cylinder with a diameter of exactly 54.0 mm at the origin (X=0, Y=0) completely through the 78.0 mm height. Timing Chain Cavity (Subtract): Cut an obround slot (stadium shape) centered at X = -30.0, Y = 0. The slot must be 24.0 mm wide (X-axis) and 50.0 mm deep (Y-axis), cutting completely through the 78.0 mm height. Stud Bolt Pattern (Subtract): Cut four vertical cylindrical holes, each 7.0 mm in diameter, completely through the Z-axis. Position them exactly at these coordinates to form a 48x50 mm rectangle: Hole 1 (X=24, Y=25), Hole 2 (X=-24, Y=25), Hole 3 (X=24, Y=-25), Hole 4 (X=-24, Y=-25). Cooling Fins (Union): Add 6 horizontal rectangular plates intersecting the main body to act as cooling fins. Each plate must be 95.0 mm wide, 90.0 mm deep, and 3.0 mm thick. Stack them along the Z-axis with exactly 3.0 mm empty vertical gaps between each plate. Apply a 1.0 mm fillet to the outer edges.

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.