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CAD on linux: Blender

WATCHED - Playlist It is a full series of lessons


organic modelling versus (solid, rigid) precision modelling


  • Any changes need to be saved with File > Defaults > Save Default File
  • It doesn't have ‘single verticles’ by default. Edit > Preferences > Add-Ons > (search for Extra Objects, and) Add Mesh: Extra Objects
  • Change colors of things. Edit > Pref > Themes > 3D View ( > Wire Edit for the lines)
  • Make lines thicker. Edit > Pref > Interface > Line Width: Thick
  • Turn on Snapping. Snapping button from menu > check Absolute Grid Snapping. (Now it will snap only when you are holding down CTRL)
  • PDT tools is an add-on in Preferences
  • There's a Preference also for num pad (so you can hit the numbers on a laptop, don't need a num pad)
  • To see Statistics (how many verts, edges etc). Go to Show Overlays button (overlapping circles) and click the dropdown and check Statistics
  • You can R-click the version number in the bottom-right and do Scene Statistics
  • Measurements. Overlays icon > check Edge Length. Will appear when you select things. It will not display sizes more precise than 0.1 (not 0.15). So don't rely on Edge Length overlay
  • milimeters. Scene Properties > Units, select mm, then set unit scale to 0.001


Supports 3d printing modelling and file formats since 2002.

Blender 3d object drawing (in 2d) with mirror.

  • new project and 2d object. turn on grid in top-right overlays expansion. select draw tool. then on the right side select the wrench and 'add modifier' > 'mirror'
  • you will see the mirror image in one mode and only what you drew in the other, until you 'apply' modifyer.
  • apply it, then select everything by pressing 'a', then click top-left 'object' 'convert to' 'bezier' and you can unvisible the strokes so you just see the bezier lines.
  • on the scene collectionn, you will see beside 'Lines' a little curved illustration. find the same thing below and click it. go to Geometry then Bevel.
  • go to the same spot as before and 'object' 'convert to' 'mesh'. it will look the same. NOTE it has to already be bezier curved and that has to be selected in the collection.
  • beside 'edit mode' in the top-left there's three squares. pick the middle one 'edge'
  • select what edges you want to make faces for and click 'f'


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