FREE STRING ART PATTERN: MONA LISA
Spring Pass Co, version 1 (October 2026)

One printable string art portrait: a 50 cm (19.7 in) circle with 390 nails,
2,173 lines and one black thread. It is the same Mona Lisa pattern
that is in the Portrait Classics pack.

WHAT'S INSIDE
  README.txt          This file.
  LICENSE.txt         What you may and may not do with the files.
  guide-letter.pdf    Build guide for US Letter paper (15 pages).
  guide-a4.pdf        The same guide for A4 paper (15 pages).
                      Page 1: frame size, nail count, line count, thread
                      color (DMC 310 Black), thread length (973 m),
                      winding time and a preview. Then the full-size nail
                      template, tiled across 9 sheets with row and column
                      labels and a 100 mm scale bar. Then the full winding
                      sequence.
  nail-order.txt      The winding sequence as plain text, one nail number
                      per line.
  preview.jpg         A rendering of the finished piece.

HOW TO OPEN IT
  Unzip the file first (on Windows: right-click > Extract All; on a Mac:
  double-click). The PDFs open in any PDF reader. The TXT file opens in
  any text editor.

HOW TO USE IT
  1. Print the guide at 100% ("Actual size"). Check the 100 mm scale bar
     with a ruler.
  2. Trim the template pages and tape them together by their row and
     column labels.
  3. Tape the template to the board and put a nail through every dot, all
     to the same height. Then tear the paper away.
  4. Nail 0 is at the middle of the right side; the numbers increase
     counter-clockwise. Tie the thread to the first nail in the sequence.
  5. Wind to each nail in the sequence, in order, keeping the thread taut.
     Mark your place every 100 steps.
  6. Tie off at the last nail.
  At 6 to 10 seconds per line, 2,173 lines take about 4 to 6 hours.

MATERIALS
  - A 50 cm (20 in) round board, at least 12 mm thick (plywood, MDF or
    cork). Paint it white if it isn't light.
  - 390 small nails, about 1.2 x 16 mm, and a small hammer.
  - Black thread: DMC 310 six-strand floss or a strong black polyester or
    cotton thread, about 973 m. Buy it on a cone or large spool;
    an 8 m skein won't go far.
  - A printer, scissors and tape.

IMAGE CREDIT
  Mona Lisa: Leonardo da Vinci. Public domain.
  Source: https://commons.wikimedia.org/wiki/File:Mona_Lisa,_by_Leonardo_da_Vinci,_from_C2RMF_retouched.jpg

MORE PATTERNS
  Portrait Classics has this pattern and 8 more:
  https://springpassco.pages.dev/portrait-classics/

QUESTIONS
  springpassco@gmail.com
