This a simple 3D-printable stand for an air pressure regulator and cleaner. Although you could use an in-line regulator to change the air pressure, there aren't many options for inline dust/oil filters. Air filters are typically designed to be wall-mounted, so I just designed a small stand that kept the filter upright on my bench.
Step 1: Print the Stand
Print out the attached STL. The geometry will work as-is on a FormOne (that what I used), so you'll probably have to make modifications to work on other 3D printers.
Step 2: Add the Pressure Regulator and Fittings.
The pressure regulator and fittings came from McMaster Carr.
The pressure regulator (McMaster 4989K101) is a combination regulator and filter. It removes oil and other particles down to 0.01 micron. The regulator adjusts from 7-120 psi.
The input fitting (McMaster 52115K202) is a push-to-connect fitting for 1/4" OD tube. You'll want to swap this part if you want a barbed or other type of connection. Just make sure it has a 1/8" NPT end to screw into the regulator body.
The output fitting (McMaster 5203K918) is a push-to-connect fitting for 1/8" tube. Again, if you need a different output, just make sure it has a 1/8" NPT end to screw into the regulator body.