The flood bar or flood coater is the part of the squeegee arm that reloads the screen full of ink after a print is made. To ensure proper loading is done, always make sure you are back flooding right after a print, and that you do not have a back flood bar that is too big for your screen. Just as in a too large a squeegee can distort your image, a flood bar acting on the same physics will load your screen wrong and also result in a poor print. Look at the illustration below.