Install LeoCAD

Before starting building with the old available construction sets, you need to install a CAD-editor, which is able to read the provided LDraw parts/libraries.

LeoCAD software seems a to be a very handy tool, which is actually used for building with Lego and it also works on Windows, macOS & Linux, it is free to use and uses the well documented LDraw drawing system.

Instead of using the included Lego parts library, we just change the library with vintage building blocks. This way it becomes easy to build with what ever construction set you like!

Installation (at least for Windows)

Follow these instructions, we first start with installing the ‘building’ progam:

  1. Install the awesom LeoCAD software from:
  2. Test if the software works with Lego parts.
    (Optional follow a LeoCAD tutorial.)

Now the software should work, it’s time to add your favorite building toy library. For example the Mobaco library:

  1. Download the latest Mobaco library from this site.
  2. Select a place on your pc where to unzip the folder and name this folder: ‘vintage_toys_library
  3. Unzip all files to this location, which you will not change anymore.
  4. Start LeoCAD
  5. Select on the menu bar: View – Preferences
  6. A new window opens, select tab: General
  7. Select the ‘parts library’, by clicking on the folder button (see image below)
  8. Select the unzipped ‘vintage_toys_library‘ folder
  9. Press ‘Ok’.
    LeoCAD tells you, the next time this change will have effect.
  10. Close LeoCAD
Step 8: select a library to use

Checking the installed library

The next time you start LeoCAD, select ‘All Parts’ in the ‘Parts’ window and you should be able to see some none-Lego parts.

In the Parts-category list, select ‘All Parts’.

So now you should be able to start playing around.

For building nice & big structures, it’s handy to change some ‘default’ settings.
Continue here, to ‘set the preferences’ once.