3DTin is a web-based 3D-modeling tool. As you can see from the selection of published models immediately above, 3DTin has adopted a voxel-based approach in which models are built up from unit cubes.

While gluing cubes together may seem like a terribly limited method of building 3D models, their software is easy to use and some types of parts–like puzzles and puzzle pieces–are well-suited to this kind of modeling. Shown uppermost is a marble maze that our own Matt Mets produced with 3DTin and printed on a MakerBot. For their part, MakerBot Industries seems to be excited about the concept: 3DTIn has just added a direct export-to-Thingiverse feature to their interface.