HEIGHT=5;
TOLERANCE=0.5;

BEARING=6;
BEARING_SPACING=177.5;

PSU_WIDTH=82;
PSU_HEIGHT=41;
PSU_Y_SPACING=-PSU_HEIGHT+BEARING*2+10;

POWER_PLUG_WIDTH=24;
POWER_PLUG_HEIGHT=31;
POWER_PLUG_X_SPACING=2;
POWER_PLUG_Y_SPACING=2;

FAN_DIAMETER=37;
FAN_X_SPACING=4;
FAN_Y_SPACING=2;

$fn=36;


__PSU_LEFT_POS=(BEARING*2 + BEARING_SPACING)/2 - PSU_WIDTH/2;

linear_extrude(height=HEIGHT) {
    // bearing connector
    difference() {
        square([BEARING*2 + BEARING_SPACING, BEARING*2]);
        // bearing
        translate([BEARING, BEARING])
        circle(d=BEARING+TOLERANCE);
        translate([BEARING + BEARING_SPACING, BEARING])
        circle(d=BEARING+TOLERANCE);
        // cutout for psu
        translate([__PSU_LEFT_POS, 0])
        square([PSU_WIDTH, BEARING*2]);
    }

    //psu outline box
    translate([__PSU_LEFT_POS, PSU_Y_SPACING])
    difference() {
        square([PSU_WIDTH, PSU_HEIGHT]);
        // power plug cutout
        translate([POWER_PLUG_X_SPACING-TOLERANCE/2, POWER_PLUG_Y_SPACING-TOLERANCE/2])
        square([POWER_PLUG_WIDTH+TOLERANCE, POWER_PLUG_HEIGHT+TOLERANCE]);
        // fan cutout
        translate([PSU_WIDTH-FAN_DIAMETER/2-FAN_X_SPACING-TOLERANCE/2, FAN_Y_SPACING+FAN_DIAMETER/2-TOLERANCE/2])
        circle(d=FAN_DIAMETER+TOLERANCE);
    }
}