You start by building your model virtually in the modeling tool of your choice, like MLCad. Here are some basic tips:
- Start building with a basic plate, brick or beam somewhere in the middle and bottom of your model. Use that part as center and first step in the main model and build up as you go. It should be at coordinate [0,0,0] and orientated straight for convenience.
- Sometimes it is necessary to start building upside down. You can use Rotation steps for this.
- Add a step with every layer change of height.
- Build layer by layer and add a step with every change of height.
- Depending on your model and building order use rotation steps to change the angle of view or when you need to build upside down.
- Take into account that any part must attach to previously placed parts in the model or else parts start `floating` when building for real, which is (mostly) not desirable.
- Use Submodels when needed. A Submodel is made from two or more parts that can actually be used as a part in the main model. You can use steps in a Submodel. If you use Submodels you can use them more than once in your model and even apply this when you mirror Submodels for use on the left and right side of you model. LPub will draw the instructions mirrored for you. Using Submodels will result in an MPD file.
- Use Buffer exchange when only one part is added to a step. You can take that part and draw it hovering over the model with an arrow pointing to the place where the part has to go. This will reduce the amount of steps and thus reduce the amount of pages needed for the instructions.