hot end fan support

Convert your classic hotend on your Creality Ender 3 to a volcano hotend. Using this part you only have to buy a big nozzle and the metal bloc that puts the heating element paralel to the nozzle. All the other parts are re used.
There is a version with the support done in CAD, and the version '...no support' doesn't have built in support so you can generate it in your slicer