Reviving this old post because @kigster deserves some appreciation for his work. I checked out three of the online box generators at Makercase, Box Designer and MakeaBox. The big box is the first one I did with maker case using full 1/4" heavy cardboard. I put in a kerf allowance but it is pretty tight. Holds together without assistance. The others are a bit loose so next time with cardboard I’ll add a bit more kerf allowance. So cool to get these boxes. Just add some craft paper to the exterior and you have some cool blocks.
