https://www.youtube.com/watch?v=MhWRSuGzFfo

Learn how to make a QUALITY refillable spray canister for penetrants, pesticides, air, or paint. The bottom of the can opens up for easy cleaning after each use. Refill with any air compressor or air pump to a MAXIMUM pressure of 50 PSI(7.25 KPA/3.45 BAR). When properly made, and air pressure is kept BELOW the 50 PSI(7.25 KPA/3.45 BAR) maximum, the can is "considered" safe to use. If you have any questions, please post them in the video comment section.

DISCLAIMER: Poor construction, or over pressurizing can be extremely dangerous. NEVER exceed 50psi, lower pressure use is SAFER! Always wear safety goggles as well as a face shield. Viewers assume all risks from the manufacture, and use or misuse of this device if they decide to make it. This channel will not be held liable for any property damage, personal injuries, or deaths resulting from this device. If you lack mechanical abilities, DO NOT try making this. It is also a good idea to NOT store a FULLY pressurized can.