In this chapter, you learned about wall thickness and several methods of creating thickness. Balancing wall thickness to create enough strength without wasting material is a skill you'll learn with practice.

We discussed how adding segments to your curves improves model resolution, and how to balance model resolution with the accuracy of your printer. More curve segments = smoother model = bigger file size. Too large a file size makes SketchUp run slower.

You learned that SketchUp doesn't work well with tiny faces, and an easy trick to scale your model up and back down quickly and accurately. Finally, you saw how keeping major features of your model as separate solids allows for ease of editing until the end of the modeling process. Later, you can use the Outer Shell command to combine multiple solids into one for printing.

In the next chapter, we'll learn how to save and reuse models we create. We also discover websites to download 3D models that other designers have made freely available...