fettle vs put back into its original condition

fettle

noun
  • Sand used to line a furnace. 

  • One's mental state; spirits. 

  • a seam line left by the meeting of mold pieces. 

  • The act of fettling. 

  • A person's mood or state, often assuming the worst. 

  • A state of proper physical condition; kilter or trim. 

verb
  • To make preparations; to put things in order; to do trifling business. 

  • To line the hearth of a furnace with sand prior to pouring molten metal. 

  • To sort out, to fix, to mend, to repair. 

  • To be upset or in a bad mood. 

  • In ceramics, to remove (as by sanding) the seam lines left by the meeting of two molds. 

put back into its original condition

How often have the words fettle and put back into its original condition occurred in a corpus of books? (source: Google Ngram Viewer )