Pi Chart - Visual Art of 1000 Digits





Introduction: Pi Chart - Visual Art of 1000 Digits

Pi Day Challenge 2016

Runner Up in the
Pi Day Challenge 2016

Bucket Challenge

Runner Up in the
Bucket Challenge

Pi is a truly remarkable concept. As a mathematical constant that has yet to have a final number because the pattern does not repeat.

Visualizing pi as a long string of numbers is easy, and rather dull. If there was some way to demonstrate the irrational seemingly chaotic nature that is pi in a much more pleasing to the eye method.

Ah! There is.

My Pi Chart actually shows the first 1000 digits of pi. It serves absolutely no purpose other than decoration. I really like the symmetry of it, even though pi does not have a pattern in itself. I think it makes a unique piece of art or display that could actually be hung in any math class.

This is how I made my Pi Chart - Visual Art.

Step 1: Materials

  • 5 gallon plastic bucket – I chose a bucket because it is already a circle and being plastic is easy to work with.
  • 10 – 1.25” machine bolts
  • 20 nuts to the machine bolts
  • 10 washers that fit on the bolts
  • 10 grommets (Curved washers)
  • 300 yards of embroidery thread
  • Super glue
  • Keys 0-9 from a dead keyboard


  • Hacksaw or sharp knife
  • Drill with bit the same size as the bolts
  • Screwdriver
  • Needle-nose pliers
  • Cloth measuring tape
  • Tape
  • Marker
  • Printout of pi to 1000 places

Step 2: Bucket List

  1. First, I had to prep the frame ring of my chart.
  2. With the drill, I made a pilot hole under the lip structure of the bucket.
  3. With the knife, I carefully cut around the bucket starting at the pilot hole.
  4. I removed the handle from the ring.
  5. With the cloth measuring tape, I measured the outside circumference of the ring. I found securing it with tape made this easier. (The circumference to my ring came out to an even 100 centimeters.)
  6. I divided this by 10. (This made the even spacing for my 10 numerals.) Easily enough, it came out to every 10 cm.
  7. With the tape measure, I marked off every 10 cm with the marker. I made the marks on the part of the ring between the edge and the heavy structure where the handle was connected.
  8. Finally, I drilled a hole at all 10 marks around the ring.

Step 3: Nuts and Bolts

  1. First, I prepared the bolts by adding one nut and one grommet to each bolt. I inserted the grommets upside down, making the curve toward the open end of the bolt. I did it this way, because the holes in the ring are just against the curvature of the structure and a regular flat washer would dig into the plastic.
  2. Next, I inserted the bolt from the outside of the ring into the drilled holes.
  3. Then, I added a washer and another nut.
  4. I adjusted it so the last nut was just to the end of the bolt.
  5. I tightened (or is it loosened) the middle nut back toward the other nut, sandwiching the plastic ring between the nuts.
  6. Using the needle-nose pliers, I tightened the outside nut while holding the bolt with the screwdriver. Doing it this way prevented the inside nut from turning and loosening.
  7. I left about 1 inch of bolt sticking out from the ring.
  8. I repeated for the remaining 9 bolts.

Step 4: 3.1415926…

  1. First, I added a piece of tape on the heavy structure ring at every bolt.
  2. With the marker, I wrote the numbers 0-9 on the tape pieces. This labeled the bolts.
  3. Next, I made a loop in the thread and tied it to bolt labeled 3.
  4. From bolt 3, I ran the string over to bolt 1, looped it around, then 4, looped it around, then back to 1, etc. I made sure to keep the thread tight, but not too tight to break it!
  5. After every 100 digits, I added super glue to the embroidery thread on the bolt to prevent it from unwinding.
  6. Continue on as long as you choose. I stopped at 1000 digits. The 1000th digit is 8. NOTE: The 1000th digit of pi is 8 because the 3 is the first digit, but the 1000th decimal place is actually 9.
  7. I tied off the thread at 8 and added a little more glue to hold it.
  8. Next, I snipped off the remaining thread.
  9. I removed half the taped numbers. (Not all! You have to know where the actually numerals begin!)
  10. I glued the keyboard keys in place, indicating the numerals.

Step 5: Finished!

There you have it! That is how I made my Pi Chart - Visual Art of 1000 Digits!

I hope you enjoyed this.

And as always, thank you for checking out my Instructable!



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    You made that?
    That is so pi.

    Super well done!

    nice piku poem :)



    oh what a life. :)

    Oh MAN! I completely missed the piku poem! (3-1-4) Well played, pastormick, well played!

    nice piku poem :)

    I sure did, pastormick! Thank you!
    It was quite easy. Try it!

    No Probs, Are you familiar with Scalar-Waves, if you look at the trapezium/ Retangular sections of your Pi-weave, you will see Scalar Waves......See Tesla......

    OH WOW! You are right! I am a large fan of Nikola Tesla and completely missed it! Physics is not my strongest science, but now that you mention it, there is a subtle pattern of the scalar waves. I did not look at it beyond the pi design.


    What an awesome piece of work!!! , I printed some pi -online 1-1000 digits, A few months ago, it is truely amaizing - I think when you look at the pioneers of mathematics and its visual representation it makes it come alive!!! My other favorite is the fibonacci sequence, which I have done lots of viuals with. [Spirals, Pentagon Spiral, & other sequences. 1,3,5,8,13,21,34,55,89,144,233,377,610. ---if you look you see the pattern lets use [11 & 7] you end up with the same sequence..........

    11,33,55,88,143,231,374,605///////////7,21,35,56,91,147,238,385,623 now minus the difference with nearest sized number and we get the original pattern back.............