How to create a few basic Celtic knots, illustrated in ASCII

When you draw these knots, they can be done in ASCII or by hand on graph paper; the method is much the same.

A brief warning: if you have difficulty understanding any of these knots, copy them to Notepad and change the font to Lucida Console, size 10. This is the most attractive font I have found so far for displaying Celtic knots. If the size is different, it ceases to be a monospaced font, so be sure you have it right.

In any Celtic knot, the main idea is to be sure that every line alternates going over and under when it overlaps itself. In fact, you can draw the outline of any of these knots on a sheet of paper and then determine whether the line overlaps or underlaps by starting at any intersection and working outward.

This is the most simple Celtic knot to draw. It is in the shape of a heart and is designed to work the same way as an ordinary knot, like you would tie in your shoelaces.


  /\  /\
 /  \/  \
/ /\ \/\ \
\ \/\ \/ /
 \/ /\/ /
 / /\/ /\
  /\  /\ 
    \/



Several of these can be joined together by the trailing ends to make more complex knots. Four of them can be connected in a square, or two opposite each other can be connected. They can be made pointing in any direction, as below.

     /\  /\
    /  \/  \
   / /\ \/\ \
   \ \/\ \/ /
    \/ /\/ /
    / /\/ /\
   / /\  /\ \
  / /  \/  \ \
  \ \  /\  / /
   \ \/  \/ /
    \/ /\/ /
    / /\/ /\
   / /\ \/\ \
   \ \/\ \/ /
    \  /\  /
     \/  \/     


Another simple knot is the loop. This just looks like a diamond, and it can be linked with other loops or other hearts. The larger it is, the more easy to distinguish from the rest of the pattern it becomes; smaller ones can be used together to make a chain.

    /\
   /  \
  / /\ \
  \ \/ /
   \  /
    \/
 
   /\  /\  /\
  /  \/  \/  \
 / /\/ /\/ /\ \ 
/ / / /\/ /\ \ \
\ \ \/ /\/ / / /
 \ \/ /\/ /\/ /
  \  /\  /\  / 
   \/  \/  \/

   /\/\
  / /  \ 
 / / /\ \
 \ \/ / /
  \  / /
   \/\/


Something that looks especially pleasing when done in ASCII, and is also impressive when drawn by hand, is the spiral. Imagine taking two pieces of yarn and winding them around each other, and you understand what the spiral is supposed to look like. It can be made alone, like below,


 \ \/ /
  \/ /
  / /\
  \/ /
  / /\
  \/ /
  / /\
  \/ /
  / /\
 / /\ \



Or combined with other knots, like this knot that combines the loop with the spiral.



   /\
  /  \
 / /\ \
 \ \/ /
  \ \/
  /\ \
  \ \/
  /\ \
  \ \/
  /\ \
 / /\ \
 \ \ \/
 /\ \ \
 \ \/ /
  \ \/
  /\ \
  \ \/
  /\ \
  \ \/
  /\ \
 / /\ \
 \ \/ /
  \  /
   \/



A rather minor category of knot that I am going to discuss is made by combining two heart knots. Personally, I call it the double heart knot; I don't know if there is a specific technical name for it. It looks like this:


    /\    /\
   /  \  /  \
  / /\ \/ /\ \
 / /  \ \/  \ \
/ /   /\ \   \ \
\ \  / /\ \  / /
 \ \/ /  \ \/ /
  \/ /    \/ /
  / /\    / /\
 / /\ \  / /\ \
/ /  \ \/ /  \ \
\ \   \ \/   / /
 \ \  /\ \  / /
  \ \/ /\ \/ /
   \  /  \  /
    \/    \/



These can be made huge or tiny. They can also be made with two sets of lines instead of one to make a very attractive knot, as will be illustrated below.

To make a more complex knot, you may want to consider making one of the basic knots, but using two sets of lines to make it. To do this, simply pay close attention to where the lines intersect. An intersection in one of these knots will consist of four lines, rather than two and will look like this:


  \ \ \  / / /
   \ \ \/ / /
    \ \ \/ /
     \/\/ /
     / /\/\
    / /\ \ \
   / / /\ \ \
  / / /  \ \ \



A heart knot using two sets of lines will look like this:

     /\    /\
    /  \  /  \
   / /\ \/ /\ \
  / /  \/ /  \ \
 / / /\ \/\/\ \ \
 \ \ \/\/\ \/ / /
  \ \/ / /\/ / /
   \ \/\/\ \/\/
   /\/\ \/\/\ \
  / / /\  / /\ \
 / / /\ \/ /\ \ \
/ / /  \  /  \ \ \
        \/    



Note how each of the intersections follows the pattern shown above. Almost any knot can be made this way, provided that it is large enough.

Almost all knots are a combination or variation of one of these, with added loops, twists and spirals to make them pretty. Just use your intuition and you will soon be creating knots like these, that can be used for design and on web pages. Try to identify the different simple componenents used in each one:


            /\/\
           /  \ \
          / /\ \ \
          \/ /\/ /
          / /\/ /\
         / /\ \/\ \
        / / /\ \ \ \
     /\/ / / /\ \ \ \/\
    /  \/ / /  \ \ \ \ \
   / /\ \/ /    \ \/\ \ \
   \/ /\/ /      \/ /\/ /
   / /\/ /\      / /\/ /\
   \ \ \/\ \    / /\ \/ /
    \ \ \ \ \  / / /\  /
     \/\ \ \ \/ / / /\/
        \ \ \ \/ / /
         \ \/\ \/ /
          \/ /\/ /
          / /\/ /\
          \ \ \/ /
           \ \  /
            \/\/



           /\  /\
          /  \/  \
          \ \ \/ /
           \/\/ /
           / /\/\
          / /\ \ \
         / / /\ \ \
	/ / /  \ \ \ 
        \ \ \  / / /
         \ \ \/ / /
          \ \ \/ /
           \/\/ /
           / /\/\
          / /\ \ \
         / / /\ \ \
        / / /  \ \ \
       / / /    \ \ \
      / / / /\/\ \ \ \
     / / / /  \ \ \ \ \
    / / / / /\ \ \ \ \ \
    \ \ \ \/ /\/ / / / /
     \ \ \/ /\/ /\/ / /
      \ \ \/\ \/\ \/ /
       \/\ \/\ \/\/ /
     /\/ /\/ /\/ / /\/\
    /  \/\ \/\/ /\/\ \ \
   / /\ \/\ \ \/\ \/\ \ \
   \/ /\/ /\/\/ /\/ /\/ /
   / /\/ /\/ /\/\/ /\/ /\
   \ \ \/\ \/\ \ \/\ \/ /
    \ \ \/\/ /\/\ \/\  /
     \/\/ / /\/ /\/ /\/
       / /\/\ \/\ \/\
      / /\ \/\ \/\ \ \
     / / /\/ /\/ /\ \ \
    / / / / /\/ /\ \ \ \
    \ \ \ \ \ \/ / / / /
     \ \ \ \ \  / / / /
      \ \ \ \/\/ / / /
       \ \ \    / / /
        \ \ \  / / /
         \ \ \/ / /
          \ \ \/ /
           \/\/ /
           / /\/\
          / /\ \ \
          \  /\  /
           \/  \/

     /\    /\
    /  \  /  \
   / /\ \/ /\ \
  / /  \/ /  \ \
 / / /\ \/\/\ \ \
 \ \ \/\/\ \/ / /
  \ \/ / /\/ / /
   \ \/\/\ \/\/
   /\/\ \/\/\ \
  / / /\  / /\ \
 / / /\ \/ /\ \ \
 \ \/  \  /  \ \/
 /\ \   \/   /\ \
 \ \/        \ \/
 /\ \        /\ \
 \ \/        \ \/
 /\ \        /\ \
 \ \/   /\   \ \/
 /\ \  /  \  /\ \
 \ \ \/ /\ \/ / /
  \ \/ /  \/ / /
   \ \/\/\ \/\/
   /\/\ \/\/\ \
  / / /\/ / /\ \
 / / /\ \/\/\ \ \
 \ \ \/\/\ \/ / /
  \ \  / /\  / /
   \ \/ /\ \/ /
    \  /  \  /
     \/    \/