sculpfun s9 air assist

i didn't like the tip of the nozzle being plastic (i only had pla on hand) so increased the nozzle hole to 4mm and used a bit off aluminum tube with the outside diameter of 4mm and inside diameter of 3.2mm. length of tube is 10mm with 3mm sticking out.

ive included 3 files depending on the precision of your 3d printer