were sandpapering

• past progressive

  past progressive

  Used to describe an ongoing action or continuous state that was happening at a specific time in the past.

  of sandpaper.
  sandpaper

  noun

  strong paper coated with a layer of sand or other abrasive, used for smoothing or polishing.

More Suggestions

• meandering
• re-engineering
• sandpaper
• sandpapery
• wandering