cscharr

tsubus

You may need to add normal supports depending on the filament you use and your settings. This could help achieve a smoother bottom side.&nbsp;Description from original <a target="_blank" href="https://www.thingiverse.com/gena_bayanov/designs" rel="nofollow noopener">author</a>:&nbsp;<h4>Summary</h4>This is improved version of <a target="_blank" href="https://www.thingiverse.com/thing:2921971" rel="nofollow noopener">Customizable train tracks</a><ol><li>It is customizer now! You don't need to use OpenSCAD to generate tracks!</li><li>But, if you want you can open the single file lego_duplo.scad in OpenSCAD, you don't need to download any libraries</li><li>You can generate bricks, plates, tracks and calibration parts</li><li>Tracks were improved to print without any supports - improved knobs and long bridges (set geo use offset to No)</li><li>Fixed some code issues, which produced non-manifold stl</li></ol>Version 2<ol><li>Set default knob and stud diameter to 9.4 (KnobD and StudD)</li><li>Set default wall thickness to 1.5 (BrickWallT)</li><li>Added small chamfer on the top of knobs</li><li>Updated calibration parts: dynamic size (depends on GenerateKnobsX and GenerateKnobsY), second track end</li><li>Got rid of TrackRadius, use Track Length for straight and curved tracks (in studs)</li><li>Updated curved rails to Type 3, so length of 4 curved rails (30deg) is equal to 4 straight rails (see more here: <a target="_blank" href="https://www.cailliau.org/Alphabetical/L/Lego/Duplo/Train/Rails/Dimensions/%20Dimensions-en.html" rel="nofollow noopener">Lego Duplo Rail Dimensions</a> article 4.2)</li></ol>Version 3<ol><li>Added Track Width and Track Wheel Width (distance betweens wheels) parameters</li></ol>

Lego Duplo customizable train tracks

Duplo Compatible Building Blocks

MrGnarly

Remix includes updated model fixes for easier printing and consistency.&nbsp;All credit goes to the author below&nbsp;<a target="_blank" href="https://www.thingiverse.com/thing:2846113" rel="nofollow noopener">Yoshi from Mario games - Multi-color by bpitanga - Thingiverse</a>&nbsp;

Duplo Compatible Building Blocks

To-Print