I keep with some exercises from the book Rendering in Pen and Ink by Arthur L. Guptill with the same nib pen, the Gillott 404. In this case it has to be controlled the hand pressure and the length of the lines. The idea is to leave some lines unfinished. According to the book the drawing will be more realistically suggestive.
We are applying Linear Discriminant Analysis in our latest research. While I was studying the original Fisher‘s works, I learned that there is a stained glass window in the dinning hall of Caius College, in Cambridge, displaying a 7 x 7 Latin square in his honor.
In combinatorics and in experimental design, a Latin square is an n × n array filled with n different symbols, each occurring exactly once in each row and exactly once in each column. Latin squares have many interesting properties but I have only used the pattern to define the color in each cell of a array drawn with the Perry 1141. I wanted to check if the Indian ink was really waterproof. And, obviously, it is.
On the other hand, I have also experimented with the Gillott 404. I have used an exercise from the book Rendering in Pen and Ink by Arthur L. Guptill. Really I have used this exercise because I do not own this book. Surely I will purchase it, I do only read excellent comments about it. Does anyone have any experience with this book?
Although the pen should always be drawn toward the draftsman when possible  I wanted to check the nib behavior in several orientations. The image below shows the results. It works with regular and uniform orientations but when the curves begin to come… The Moleskine sketchbook paper does not seem very adequate to be used with this nib either.