Step 7Making a handle for the plunger
iImage Information

Now get your bottle cap and a small amount of body putty, enough to fill the cap. Use a piece of cardboard, and put your putty onto it. Squeeze a little hardener onto the cardboard (it doesnt take much) and mix it thoroughly. After it is mixed well, spoon it into the cap, and press the end of the copper pipe that doesnt have the epoxy on it into the middle of the cap. This creates somewhat of a handle to push down and pull up the plunger we just made. After this hardens, which wont take long, depending on how much catalyst was used; your injector is basically finished.