Art of Concentration: Day 13

Today’s line drawing is made up of hearts.

AofC hearts

The Art of Concentration rules are:

  1. Draw lines on a page.  Straight line, squiggly lines, circles, squares, triangles, stars, it does not matter.
  2. Color every other section a different color.  Start anywhere.  Use any color.  Typical you will only have a black pen, or a pencil, those are fine.
  3. If you desire, use multiple colors.  Sections of the same color can not touch.

My first color choice:

AofC hearts color 1

My second color choice:

AofC hearts color 2

Today’s hand drawing:


Hearts Apart

You can download a PDF version of the line drawing on the Coloring Page, or click here.

The Art of Concentration: Day 1

For many years, I did not doodle in meeting.  I did not doodle in classes.  I did not doodle in my spare time.  What I did, was grab a piece of paper (any size) draw some black lines on a page, and color every other section on the page until the page was full.  During computer classes, I would open up Microsoft Paint and do the same thing.

Some people may call it OP Art, Optical Art.  I never got that detail.  I never tried to create an optical illusion.  It just was lines on a page.  It was like a game.  If helped me from falling asleep in meetings and classes.  I could do this task and still pay attention to what was going on around me.  In computer classes, the people sitting behind me would watch my monitor as I was creating a piece.  Microsoft Paint was always installed on the computers, even if games or the internet was not.

The rules were:

  1. Draw black lines on a page.  Circles, squares, squiggly lines, it did not matter.
  2. Color every other section
  3. If you were brave, use multiple colors.  Sections of the same color not could touch.

I am going to try over the next few days to repeat this experiment.  I am going to call it the Art of Concentration.  Even though, this art work sound simple enough, it requires concentration.  You have to figure out what section to color.  If you lose concentration, you may color the wrong section.

Today’s piece, I thought is was something simple.  Wrong!


Now to color every other section:  Where did I go wrong?


Flower Madness

To figure it out, I created the line drawing in Corel Draw and created a bitmap.

AofC Flower BMP

I opened the line drawing in Microsoft Paint and colored the page.  Paint vs. paper – if you mess up in Paint, you can correct it.

AofC Flower

If you would like to try coloring the page, I have created a PDF.  Click Here.  You do not have to color the same section that I colored, just pick a section to start.

You can also find it on my newly created Coloring Page.


My father-in-law has shown very interested in the 3D printing.  Asking questions about how it works and what can it print.  Before Father’s Day, I sat down in from of the computer and said “What can I print for my father-in-law?  He plays dominoes every Friday!  I can do that!”

I looked up the dimensions for Dominoes; design the dominoes; and created the case to look like a domino.


His own personalized dominoes.  I also printed a set for my dad for Father’s Day with his last name on them.

The .stl files can be downloaded from

Tinkercad – the free, online 3D CAD app