Custom Socket Head Bolt Cap

This is a parametric, customizable cap for socket head bolts (e.g., DIN 912) designed for FDM 3D printing. The cap features a clean, flat top with optional top and bottom fillets for a polished look. It includes a hollow insert that fits snugly over the bolt head — perfect for covering bolt heads in visible assemblies, protecting from dust, or achieving a finished look.You can easily adapt this design to fit bolts of various sizes by adjusting the variables in OpenSCAD.Parameters Explained:VariableDescriptioninsert_outer_diametermatch this to the bolt head diameter plus a small tolerance. (s)insert_inner_diameterInside diameter of the insert (insert thickness = insert_outer_diameter - insert_inner_diameter).insert_heightHeight of the cylindrical insert. Should match the height of the bolt head. (t)top_diameterDiameter of the flat cap on top. This can be larger for better coverage or aesthetics. (dk)top_thicknessThickness of the top cap. 1.5–2 mm works well.toleranceClearance added to t