This might be amusing. Way back around 1990 I got some early water based lacquer and built a ridiculously simple spray rig. I don't think I've ever seen one cheaper. I still have it in a box so I took some pics to share. The paint wanted a HVLP sprayer so I found this cheap atomizer that was advertised as such. I think it was less than $10. That was the last part that was paid for. The compressor was taken from an old refrigerator and some aquarium tubing was simply wiggled onto the cut tubing on the pump and connected to the atomizer. Total cost? Almost nothing. Yet it worked very well, didn't sputter and the pump didn't contaminate the air with oil or condensation over many guitars and other household items. Now the pics, feel free to point and laugh.