Customizable TPU Air Duster

I set out to make an air duster that could be easily modified right from your slicer. To do this, I made the bellows portion one solid model so that you can change how firm or how soft you want you make it! 

Just using your normal TPU settings, set your top layers and infill to zero and turn off settings that ensure vertical thickness, then you can choose the number of wall perimeters you want and set your own bottom thickness! You can even use modifiers to set different thicknesses where ever you like. In the model pictured above, I used 2mm walls up to the top baffle, where I switched to 2.5mm walls to help keep it stable before dropping back to 2mm for the top cone. Mine is quite firm but if you want to make yours softer, you can! Just keep in mind that going too thick on the top most section may close the hole completely.

The nozzle can be printed using normal settings in a rigid filament (I used PETG). From there, you can use modifiers in your slicer – or simply trim the nozzle post-print – to cut a custom size and angle for the opening. If you're trimming the nozzle by hand, you don't have to cut off a lot, just take little at-a-time until you get the airflow you want.

It can be tricky to get the nozzle fully seated onto the bellows as the TPU will want to flex out of the way, but no glue is required. Just press the nozzle down firmly onto the bellows, optionally pinching the base of the top cone or allowing the bellows to collapse onto a firm surface beneath, until you hear it click into place. Be careful not to stab yourself with the end of the nozzle. You'll know it's on when it can spin freely around the bellows.

I've also included the STEP file so that you can completely customize your air duster as you see fit! If you come up with any interesting ideas, be sure to post a remix so we can all enjoy them!

If you're interested in how I made the air duster pictured above, I have included my Orca project file and I think that will carry over the settings (I'm still fairly new to Orca).