Demonstration of "feeking" - Фиканье иконы 

Small particles of dust in the air become an issue when they settle on the surface of the icon and get trapped in olifa. Upon drying, these particles will look like tiny, shiny bumps, giving the surface an unpleasant, grainy look. To avoid this, it is necessary to smooth out the surface every 5-10 minutes, energetically wiping the surface with your hand, back and forth, from side to side, in different directions. As olifa solidifies, one might hear a swishy, squeaky sound while brushing the surface with the palm of the hand, "fffeek... fffeek..." This sound is similar to the one made by a wet window glass when wiped dry with paper. Hence the Russian term for this process, feeking, which means to make the congealing layer of olifa smooth and even by constantly rubbing it with your hand over the entire surface. If an iconographer performs the "feeking" at exactly the right time, the resulting film will be smooth and glossy.