Quicksand Flooring on Instagram: "3 REASONS why we punch nails: 1. To prevent the sandpaper from ripping - if you go over a protruding nail it will destroy and tear apart your paper and sometimes even damage your machine.. 2. To prevent causing a FIRE - if you hit a nail it could set off a spark, this can then get into your dust bag and one thing we know: a spark and a bag of dust are not friends.. 3. To prevent SHINY HEADS - sometimes the nails only get exposed when sanding a layer of the timbe