CR-10 50 x 15 Double Blower Fan Fang Mount

This is remix version of
Imagine That Titian/Atlas, Creality CR-10, Afinibot A31 Print Cooling by RebelRousingProps. Here are improvement I've made.

1. The original one actually doesn't accept my 50 x15 mm part fan, because its actual thickness is 15.6. So I enlarge the mounting hole to fit the part fan.

2. The original design also make the bowden clamp at the heatbreak side slightly bended to the front because there's no room for it. And I'm afraid this might affect the nozle system per