Monday, January 19, 2015

Clay Whistle Glazing and Two Point Perspective

Today we worked on glazing our animal clay whistles, and started our two point perspective projects

Project One - Glazing 
Students need to glaze their animal whistles. The whistles are located in the steel cage, and their are two different glazes. Beware and read the label! Do not use Undercoat.

The students should apply three coats, and allow each coat to dry before applying the next coat. Once the whistles have three coats and are dry they should be returned to the cage. I will fire them when I return.

There are also two small boxes of Stroke and Coat glaze. Here is a link to the chip chart for the Stroke and coat glazes. Here is a larger image, but it is from a different manufacturer.

The students should apply three coats. They need to wait for the glaze to dry before apply the next coat.

Once the whistles have three coats and are dry they should be returned to the cage. I will fire them when I return.

Project Two - Two Point Perspective

The students are making a two point perspective drawing of their name, favorite band, or other school appropriate word. Please have all students keep their drawings in class. They can store them in the drawers by the hot water kettle.
  1. Please have the students review the notes and steps that they received in class. You may wish to ask what they are.
  2. Also please emphasise to the students that they must use some type of straight edge. This is a mechanical drawing, i.e. no free hand construction (unless students curve their letters).
  3. Vocabulary students should know. Please review:
    1. Horizon Line - This line is a light straight line that helps the student to determine where they would like to place their drawing
    2. Vanishing points - two marks or dots that are equidistant measuring down from the top of the paper along the the right and left edge of the paper
    3. Segment End - These are the two ends of a line
    4. Vertices - Where two lines intersect to form an angle
    5. Vertical line (perpendicular line) - a line that is constructed 90o to the horizon line
    6. Vanishing lines - these lines are constructed by
    7. Face - a surface of a three-dimensional object
  4. Types of 2-Point perspective drawings
    1. Above the horizon
      1. Above.jpg
    2. On the horizon:
      1. On Horiz.jpg
    3. Below the horizon:
      1. below Horiz.jpg

How to construct the project!
  1. Place your paper in landscape position (long side right to left)
  2. Construct Vanishing Points (VP)
    1. Measure the distance from the top left corner to the bottom left corner and place a large mark on the edge of the paper midway between the two corners.
    2. Do the same on the right hand side of the paper .
    3. For example here my paper measures 9” so if I divide this in half I get 4.5”
    4. step 1.jpg
  3. Construct a light Horizon Line
    1. Draw a straight light line and connect the two Vanishing Points. This will create the horizon line.
      1. step 2.jpg
      2. Note: you do not have to label your drawing with VP or Horizon line this is for clarity only
  4. Construct your first vertical line. You need to make two major design decisions here:
    1. Design decision One:
      1. Decide if the first vertical line will be:
        1. Above the horizon line
        2. On the horizon line
        3. Below the horizon line
    2. Design decision Two:
      1. Decide if the first vertical line (perpendicular line) should be drawn:
        1. Closer to the left vanishing point
        2. In the center of the paper
        3. Closer to the right vanishing point
  5. In my example I place the first vertical line (perpendicular line) above the horizon line and closer to the left vanishing point
    1. step 3.jpg
  6. Construct a vanishing line from each end of the line segment to the vanishing points
    1. step 4.jpg
    2. step 5.jpg
  7. Construct a vertical line (perpendicular line) to the left of your first vertical line
    1. step 6.jpg
  8. Construct a vertical line (perpendicular line) to the right of your first vertical line
    1. step 7.jpg
  9. Construct vanishing lines from the two  line segment ends you just made
    1. step 8.jpg
    2. step 9.jpg
  10. We now have constructed a rectangular prism. From this basic shape you will have to count the number of letters in your word and then create equidistant vertical lines on the right face (or the predominant face).
    1. It is good practice to create your words in 2D first and then use the vanishing points to create the 3D letters.
    2. For example FUN has three letters so the right face is divided into three equal parts
    3. step 10.jpg
  11. On a piece of scrap paper make block letters of your word. For example my word is FUN so my letters will look something like: FUN
  12. Next I need to construct vanishing lines that will help me to develop the F in the first block
    1. fun1.jpg
    2. fun2.jpg
    3. fun3.jpg
    4. fun4.jpg
    5. Next I like to erase some lines so that I can view the letter more clearly. Notice that I do not erase the vanishing lines in the other blocks. These become guidelines for the other letters I construct. If I was going to make an E or some other letter I have a good start on making those block letters.
    6. fun5.jpg
    7. Now I need to construct vanishing lines to all segment ends or vertices.
    8. fun6.jpg
    9. fun7.jpg
    10. fun8.jpg
    11. Finally I erase some of my vanishing lines so that the F becomes more clear.
    12. fun9.jpg
    13. Using a similar method as I used to create the “F”, I will next create the U, and N. To create the U, I need to establish vertical lines for the inside of the U, and define the lower part of the U.
    14. fun10.jpg
    15. fun11.jpg
    16. Next construct vanishing lines to the segment ends and vertices and then erase any unnecessary lines.
    17. fun12.jpg
    18. Constructing the N, I need to create the vertical lines to define the inner edges of the N. I also need to create the two sloping lines that define the N shape.fun13.jpg
    19. Erase unnecessary lines and then construct vanishing lines to each segment end and vertices.
    20. fun14.jpg
    21. Finally construct vanishing lines to end segments and vertices and erase unnecessary lines.
    22. fun final.jpg