Commodore Business Machines Logo - Chris Yaneff, 1965

readme.md

dimensions from https://twitter.com/vccmalta/status/1066231884911468544

CBM_Logo-Chris_Yaneff-1965.scad

// Commodore Business Machines Logo by Chris Yaneff (1965)
// scruss - 2018
// from https://twitter.com/vccmalta/status/1066231884911468544

a=100; // 10 cm
b=0.034*a;
c=0.166*a;
d=0.30*a;
e=0.364*a;
f=0.52*a;
g=0.53*a; // central hole is slightly elliptical
h=a-e;
i=b+2*(d+c);
$fn=64;

union() {
    difference() {
        translate([i/2,i/2])difference() {
            circle(d=i,center=true);
            scale([g/f,f/f])circle(d=f,center=true);
        }
        translate([h,0])square(a);
    }
    polygon([
        [h, i-d-c],
        [h, i-d],
        [a, i-d],
        [a-c, i-d-c]
    ]);
    polygon([
        [h, d],
        [h, d+c],
        [a-c, d+c],
        [a, d]
    ]);
}

CBM_Logo-Chris_Yaneff-1965.svg