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The knife is approximately 270 mm long and should fit on most build plates (diagonally).
I have provided several different versions:
"Flat" - for the best print result on most FDM printers
"Pointy" - a more accurate version as the blades usually don't have an even thickness. If you print that on a regular FDM you will have little steps on the top surface.
Both versions are available in a combined and split version. Use whichever you prefer. The holes have a diameter of 22 mm. If you have bigger or smaller fingers, you will need to scale the knife accordingly.