Pick a type and set the edge length — heel, tip, neck, tang and handle follow. Tap any value to type it; tap a group to open it.
Every measurement of the knife, group by group.
What the numbers say about the design as it stands.
The blank laid out on the bar, and what else fits beside it.
A sunobe (素延べ) is the rough blank a knife starts life as. Profile, stock, handle and grind for Japanese kitchen knives — so you can see the blank before cutting expensive steel.
Sunobe Studio is one hobbyist knife maker in Canberra, Australia. The passion started on a course at Tharwa Valley Forge, just down the road — I can't recommend their courses highly enough. I make Japanese-style kitchen knives in a home workshop and built this tool because I wanted to see a blank before cutting steel. It's free and it stays free.
Follow the knives on Instagram at @sunobestudio. If the tool saved you a ruined blank or an evening of CAD, you can buy me a coffee below — it keeps the domain paid.
Pick a knife type for its proportions, set the edge length, and the heel, tip, neck, tang and handle follow. Shape, stock, handle and grind each have their own controls; every derived value can be unlocked. Millimetres throughout.
The measured proportions behind every auto value. Edit a row and that knife type gives you different defaults from here on.