This is a particle based jigsaw I developed for a personal project. The image, tile count and coupling shape can be customized. The file contains two scenes, one called Demo, contains the Spring jigsaw as shown in the demo image, the second scene is called Build and is for creating your own jigsaw.
This is not for the faint hearted, there are quite a few steps involved in creating a new jigsaw. I have outlined the instructions as clearly as possible in a packed text file but I recommend downloading the PDF Instructions as they are easier to follow.(lots of pictures)
Be warned,the poly count can get very high,very quick. Preview images have about 350k verts each. Materials are good for Eevee or Cycles .(Previews are Cycles)
Update: V2 01/02/21 * Added Demo Scene * Updated Instructions