A set of OpenScad modules to produce "Playmobile-like" Duplo and Lego-compatible structures. Also can be used to produce DUPLO/LEGO-compatible bricks and to create mashups (see other things I made). See also: Credits: This work is based on 1) The parametric lego duplo by Domonoky ( http://www.thingiverse.com/thing:1778 ). 2) Tony Buser's OpenSCAD Bitmap Fonts Module - http://www.thingiverse.com/thing:2054. Added on April 9 for version 1.1 Updated, Mai 1 2010 (v. 1.3) Updated, nov 2011: bug fixes Updated, sept/oct 2012: Update Oct 2014: The elements are called "Doblo" and "Lugo", because they are not DUPLO (TM) and Lego (TM). They just fit somewhat.Using the OpenScad library It is better to generate your own STL from the OpenSCAD library, since you can tweak parameters, in particular define larger walls for high-resolution printing. In addition you could design your own castles. Install OpenScad ( http://openscad.org/ ) The OpenScad file is self-documented. Alternatively (and easier to read), a beginning of the manual is at http://edutechwiki.unige.ch/en/Doblo_factory.To play: Versions: General printing tips Printing the castles In 2012 I made the code much more Lego-compatible. Also I changed the base plate. Just print the first layer very slowly. A prior version of the first big Duplo castle (the red one in the pictures) was downloaded 144 times, but I have no idea whether someone else than me printed it. If you use a PLA printer, printing should not be difficult, but it could take ages. For the DUPLO-compatible version, 0.3mm or even 0.4mm layers are ok. For optimal quality use 0.2mm and slow printing. Then wait. Important: In order to get the first layer right, make sure that the nozzle is very close to the platform. In addition, either configure your slicer to use a very slow speed for the 1st layer and (maybe) slow speed for the roofs. Otherwise, use your control software to print the 1st layer at 25-30% of the normal speed. I repeat: The first layer is mission critical and IMHO any printer can do it iff you do it very very slowly ! In addition, you could: Some printing hints for the Rapman 3.1 and other very old printers (skeinforge settings) Printing tips for the FelixPrinter (or similar, e.g. Prusa i3 designs) Prints do fine using the "normal" SFACT settings. OpenScad code is now optimized for this printer or more generically: for a 0.2mm layer capable 0.35 nozzle PLA printer. I only made slight modifications, essentially: 1 extra shell for the first layer, 1 extra layer for flat bridges (roofs), very slow speed for the first layer and slower speed for roofs, and finally more fill (about 0.35). But it's easy to change parameters if you need to do adaptations for your printer. IMHO, any printer with similar specs ought to be able to print at either Lego or Duplo size. Printing tips for the fabbster (dead product) Use one of my print styles (e.g. UMA): http://edutechwiki.unige.ch/en/Netfabb_engine_for_fabbster_build_styles if you use filament rolls. I did not try to print a castle since I don't have a heated print bed, but smaller blocks work fine. Use sticks and an official "normal" style for better quality. Don't try the castles without a heated print bed. Using the uploaded Blocks for mashups e.g. for lettering: