Identify Surface Imperfections with Inspection Light

inspection light without an inspection light if i catch this thing up that's at me so that um we'll just cast it down so now i got the table right here this finish actually looks pretty amazing it looks pretty dang good i would say well that thing's finished we'll just cast a light from an inspection light right across this door right here now i can see all kinds of imperfections i can see a seam here we've got things we've already filled i can see surface tension on here that's the finish isn't very flat i can flip my door over i can see knot holes i can see all kinds of things that this light cache now what happens is an inspection light this bright led casts light across this door and it's going right across this flat surface but anything that it doesn't any type of holes or indentations it's going over the top of that and it's leaving a dark shadow where all those imperfections are and those are the imperfections you want to begin filling we start filling we use