Refinishing an Old Red Oak Wood Floor

Today we have sanded an old Red Oak Floor, we used a #36 sand paper, and then a # 80 it is ready to be buffed and sealed, then we will apply a coat of Water Base Polyurethane, let it dry for 4 Hrs and buff it again, finally the last coat of polyurethane will be applied.
TIPS: Always make sure you dispose the dust properly, inside a metal container and never leave it indoors, use dust mask and finally dispose of the empty polyurethane, applicator's pad and empty can/s properly 
Tomorrow we will show you the final product....