
While making the scale drawings for it, he played around with wooden blocks to see what the structure would look like. He soon discovered that the blocks were not at all well adapted for building certain elements like floors, roofs and lintels.
Unsatisfied with the possibilities of these blocks Tom van der Bruggen invented a plank based on the progressions of the uneven numbers 1:3:5. Three thicknesses for one width and five widths for one length. This ratio opens a whole new way of building. With KAPLA planks, one can construct with the precision of artwork and the stability of stones.
Tom van der Bruggen named his planks KAPLA. This is an abbreviation of “KAbouter PLAnkjes” which means gnome planks in Dutch. With KAPLA planks, kids as well as adults can build all kinds of different architectural constructions, animals, and other extraordinary creations.