video to follow to sharpen knife with diamond stone/leather strop https://www.youtube.com/watch?v=pagPuiuA9cY

• paper guillotine:
  • use rust eraser to keep corrosion off of paper guillotine as the corrosion creates a separation (https://bonika.com/products/japanese-rust-eraser)
  • can use little diasharp diamond hones to sharpen, see https://www.youtube.com/watch?v=9tSare7p1x4