anchor.diff:  
         <br><br>
   
  -      <img src='https://edpdxprod.s3.amazonaws.com/photos/avatars/000/000/161/large/IMG_0367.JPG?1459225238'>
  +      <img alt="smoothed cut bottle" src='https://edpdxprod.s3.amazonaws.com/photos/avatars/000/000/161/large/IMG_0367.JPG?1459225238'>
         <br><br>
         <h3>Drilling the hole</h3>
   
  
positive.code: 
        <h3>Cutting the bottle</h3>
  
        <img src='https://edpdxprod.s3.amazonaws.com/photos/avatars/000/000/139/medium/IMG_0350.JPG?1458186601'>
  
        <br><br>
  
  
negative.code:       bottle will be flush with the top of the cube. If some of the bottle is extending
        out of the hole, adjust the depth stop on the drill press and redrill.
        <br><br>
        <img alt="bottle check" src='https://edpdxprod.s3.amazonaws.com/photos/avatars/000/000/163/large/IMG_0377.JPG?1459225876'>
        <br><br>
  
  
  