Making

Bottom

Here is the diagram of the bottom cut in a cardboard sheet of 650 × 460 mm.

Bottom cutting

For the marking, I made a rule in a long cardboard scrap. On one side, I drew the marks for the length (from left to right: 0 - 50 - 102 - [105 - 142 - 148 - 184 - 190 - 227 - 233 - 269 - 275 - 312 - 318 - 354 - 360 - 397 - 403 - 439 - 445 - 482] - 485 - 537 - 587); on the other side, I drew the marks for the width (from bottom to top): 1 - 51 - 52 - 53 - [55 - 92 - 98 - 134 - 140 - 177 - 183 - 219 - 225 - 262 - 268 - 304 - 310 - 347] - 350 - 351 - 352 - 402 - 403).

Note: figures in brackets, rounded to the nearest millimeter, represent the position of the future dividers. Notice the height reduction of the tongues (50 instead of 52) which will be located under the folded short sides.

I draw the position of the future dividers, which will allow to check their correct positioning. If I don’t know in advance what type of partitioning (in length or in width) will be used for this or that box, I draw the position of every possible divider, both in length and in width.

After cutting, we have to mark the folds (represented by broken lines) either with a specialized folding tool or with the back of a knife (not the cutting edge!). I often also use an empty ball pen.

I then place double-sided adhesive strips at the indicated locations (gray rectangles). I start by pasting the tabs on the small side, then I fold this one over.