AD5X/AD5M/AD5M Pro Bowden Clip and Improved Fan Retainer

The AD5X is a great machine but like any there are always little niggles which can be improved upon. 

1. The Bowden clip which retains the 4 in 1 filament feed tube is small and fiddly to remove. The model attached is longer and still fits behind the fan casing (it needs to be pivotted to the left).

2. The Fan on all the AD5 machines is prone to pop off and destroy ongoing prints. I made a robust fan clip but found that it could catch the sides of the machine so redesigned this minimal one to get rid of that issue. The long side goes to the right of the print head and clips into the fan vents.