To get the best out of 3D printing, it helps if you can design your own parts. In this tutorial series, we will learn to use a free 3D CAD program to do just that.

In this episode, we look at situations where a model has already been designed that we want to modify, but the author has not made source CAD available, so all we have is an STL. Onshape has improved its functionality and it’s now possible to add and subtract geometry from STLs and other meshes. We also briefly look at working with a 3D scanned mesh.

0:00 Introduction
3D design for 3D printing Onshape playlist: [ Ссылка ]
Direct link to create a free account: [ Ссылка ]
Source CAD for tutorials: [ Ссылка ]

0:46 What we are designing/modifying
Ender 3 electronics case video: [ Ссылка ]
Ender 3 electronics case on Printables: [ Ссылка ]

1:46 Taking measurements
Digital calipers on Amazon : [ Ссылка ]

2:01 Importing STLs into Onshape

3:24 Taking measurements from the STL

4:23 Sketching on the STL snapping to vertices

6:24 Removing portions from the STL

7:10 Adding parts to the STL

8:18 Limitations and workarounds

9:57 Slicing, and test print

10:38 Modifying a more difficult shape - electronics case
Mesh friendly boolean FeatureScript by mbartlett21: [ Ссылка ]

12:36 Working with a 3D scanned mesh
Thanks to Andy for providing the 3D scan.

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