// height of the base
h_base = 5;     
// outside rounded radius of bin
r_base = 4;     
// lower base chamfer "radius"
r_c1 = 0.8;     
// upper base chamfer "radius"
r_c2 = 2.4;     
// bottom thiccness of bin
h_bot = 2.2;    
// outside radii 1
r_fo1 = 8.5;    
// outside radii 2
r_fo2 = 3.2;
// outside radii 3
r_fo3 = 1.6; 

// screw hole radius
r_hole1 = 1.5;  
// magnet hole radius
r_hole2 = 3.25; 
// center-to-center distance between holes
d_hole = 26;    
// magnet hole depth
h_hole = 2.4;   

// top edge fillet radius
r_f1 = 0.6;     
// internal fillet radius
r_f2 = 2.8;     

// width of divider between compartments
d_div = 1.2;    
// minimum wall thickness
d_wall = 0.95;  
// tolerance fit factor 
d_clear = 0.25; 

// height of tab (yaxis, measured from inner wall)
d_tabh = 15.85;    
// maximum width of tab 
d_tabw = 42; 
// angle of tab   
a_tab = 36; 

d_wall2 = r_base-r_c1-d_clear*sqrt(2);
d_magic = -2*d_clear-2*d_wall+d_div;