Helo,
when you buy your knives set you are limited to 5 pieces. Like in my case i bought more knives separately, but had no place to put them.
Block is printed 0,15mm in Antracite PLA from Fiberology, I am begginer so did not wanted to risk in woodfil, but probably would be better match for original wooden block.
This should also fit to Edge and Essential 5 piece blocks from Fiskars.
Also if you print in other color can be better match for modern kitchens (eg. shiny red or white).
The author hasn't provided the model origin yet.