We can move, scale, and rotate objects, collectively called transformation.
||Grab (move, translate)|
Exercise: experimenting with transforms
- Move, rotate, scale the cube to get used to the controls
- Note the changing numbers in the lower left corner of the 3D View
Ctrl-Zto undo and get the cube back to the origin.
Constrain a transformation¶
Immediately after pressing
R we can constrain the
transformation to a particular axis by hitting the key for that axis
||Constrain transformation to X axis|
||Constrain transformation to Y axis|
||Constrain transformation to Z axis|
||Constrain to last-moved-in direction|
||Snap to the grid|
||Fine-tune the transformation (10x slower)|
Exercise: constrained transforms
- Make the cube taller (
- Move the cube back 5 units (
Ctrland pay attention to the numbers at the bottom left)
Type numbers to be more precise¶
One way of making precise transformations is to type numbers after choosing a transformation axis.
||Precise entry of transformation|
In the Properties Shelf, we can type in exact values for the position of an
object. Toggle the shelf on and off with
N (think “numbers”).
||Toggle the Properties Shelf|
Exercise: precision transforms
- Using the Properties Shelf, reset the cube to its original location (0, 0, 0), rotation (0, 0, 0), and scale (1, 1, 1)
For 3D printing, we want to be able to relate what we do in Blender to the real world. By default, Blender uses arbitrary “Blender units”: one unit per grid square. Let’s set the units to millimeters.
Exercise: setting units
- In the Properties panel (far right of the interface), click the button for Scene Properties (see figure below)
- Click , and enter into the “Scale” text box. Now one “Blender unit” will be equivalent to 0.001 meters or 1 mm.
- In the Properties Shelf (the one toggled by
N), look for the section. It may be folded up, so click the arrow to unfold it.
- Enter into the “Scale” text box. This makes the background grid use millimeters as well.
If importing a file that someone else created, you may have to reset the units. You may find yourself doing this a lot . . .