Robust Junction Box - Parametric, fully configurable

I needed a robust electrical junction box.

NOTE: !! This will probably not meet any electrical safety codes !!

It optionally has a has a mount for a 3-position terminal block https://amzn.to/3I6G4a0

It is configured for a 3/4" cable gland on one side, and a 1" cable gland on the other https://amzn.to/48lnyWc

This is fully customizable. The height, width, depth, how round the corners are, how thick the walls are, size, of holes, etc.

//Dimensions
width_x=150;
depth_y=85;
height_z=48;
corner_outer_radius=10;
wall_thickness=3.75;

lid_clearance=0.5; //so the lid fits into the box
cap_hole_r=4/2; //clear screw shaft
base_hole_r=3.5/2; //"thread" hex for self tapper

//mounting_flange
mounting_flange_hole_r=5/2;
z_mounting_flange_thick=6;
mounting_flange_edge_r=z_mounting_flange_thick*0.75;
mounting_flange_corner_r=12;

x_mounting_flange_widths=mounting_flange_corner_r*2-mounting_flange_edge_r;
y_mounting_flange_depths=mounting_flange_edge_r;

//Holes f