Just posting it here for those who have a mini air compressor but without an air tank and is looking for idea to have a DIY air tank.
I've bought an air compressor a year ago but without an air tank. It's a max ~50psi mini compressor with auto shut off when it's reaches the max limit. It's kinda ok when use in short duration but if I used it for a long time, condensation starts building and water starts to spew on my airbrush ruining my paint job. I tried adding additional water filter connected directly on my airbrush excluding the one on my air compressor but still doesn't solve my problem. So I decided to DIY this tank. Now my problem seems to be a thing of the past.
Here's my DIY air tank. Constructed out of PVC tubing. Holds around 5.5 liters of compress air.