And while maintaining that slight downward pressure, the squeegee is drawn across {HEAD ~ the surface} of {TAIL ~ the crystal wafer} from behind the epoxy paste 21 wherein the edge of the rubber blade sweeps or spreads the paste along the surface and hydraulically forces some portion into slots 20, displacing air, which is forced out 
And while maintaining that slight downward pressure , the squeegee is drawn across { HEAD ~ the surface } of { TAIL ~ the crystal wafer } from behind the epoxy paste 21 wherein the edge of the rubber blade sweeps or spreads the paste along the surface and hydraulically forces some portion into slots 20 , displacing air , which is forced out
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH