Adapter between doblo bricks and Naef blocks

thingiverse

An adapter is available for Naef blocks and Duplo-compatible Doblo blocks. Recent updates include "mouse ears" on Naef to Doblo adapters for better printing flatness, as well as a 2x2 adapter. For the Doblo to Naef adapter, print it and choose a nibble size of 3x3 or 4x4. The Naef to Doblo adapter requires assembling the bottom part first (similar to half a block) followed by attachment of the appropriate top, either 3x3 or 4x4 nibbles. Secure the pieces together using filament in the registration holes for proper alignment. The OpenSCAD file can be edited for customization like adjusting registration hole radius, creating bricks with specific nibble counts, and even making them Lego compatible. You can also modify the height of the fillet connecting Doblo and Naef blocks (dim_f variable).