Very good overview https://www.youtube.com/watch?v=dAD48rqqcd8 https://www.youtube.com/watch?v=dAD48rqqcd8 Its just a very intricate process, a messy material

Very good overview https://www.youtube.com/watch?v=dAD48rqqcd8 https://www.youtube.com/watch?v=dAD48rqqcd8 Its just a very intricate process, a messy material and probably a manual job for a long time.