Step 1: Safety First & Disclaimer
There is some safety precautions that you have to take when refilling your disposable propane cylinders and you will need to handle it properly and observe all the best-practice safety protocols.
#1 Always do the refill process outside.
#2 Never smoke during the entire process.
#3 Be sure there is no open flame in the area.
#4 Wear safety glasses and protection gloves for added safety.
Again, I am not responsible for any accident that can happen when you refill your own disposable propane tank.