Celtic Knotwork

Start the Outline/Inline by drawing completely around the doodle without touching the line, leaving a comfortable line width between your ink line and the doodle line. This is where you can change your mind about part of it too. I didn't like the angle of one crossing, thought it would be hard to do in the inline stage, so I changed the outline to exaggerate a couple of curves. If you want to be meticulous, change the pencil line before inking the outline, or at least after that and before the inline. On this illustration I've started to do the inlines too. Inline is the second half of this construction stage. It's outlining the inside of every space created by the lines in the design. It takes some patience -- I got a little complicated with this doodle and it's rather a large knot. But wait till you see how it looks when it's done!

Try to keep the line widths the same between the outline and the inline, even if it doesn't fall exactly with the graphite line in the center. I often use the inline to correct for it if the outline swayed a little too close or a little too far out, to keep the space between those lines consistent. At every point the lines cross it should form a perfect diamond or square -- the line that skips should be able to be continued exactly to where the next one starts.

This illustration shows the Outline/Inline stage complete but not erased.

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