This fire extinguisher uses only sodium bicarbonate and pressured air and the materials needed is... pretty easy to find in stores or in your garage... and here is the list of materials.
-large pineapple juice can
-a 12 inch umbrella stem
-metal faucet valve
-bicycle tire valve
-1 threaded male PVC adapter
-1 threaded PVC Elbow
-250 grams of All purpose industrial epoxy.
There are three models, but i cant upload the pictures of the others.
oh yeah and maybe I'll be able to upload the instruction step by step with pictures soon.