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batFINGER
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Make a "bounding box"

Add a cube to your scene, set its display type to wire to make it easy to see within. (and make it unrenderable yada yada). Scale it to fit all the parts of your model. Apply

Apply scale. Select This makes the scale of the box unity.

Select all objects (or all topmost parents of) and make the cube their parent.

enter image description here

Now you can scale the cube. The dimensions of the cube will be the dimensions of all objects. Applying scale to the cube will filter down parent chain, applying scale to all children.

I use this technique when modelling something like a car with ortho plans. Make the cube at the start to the dimensions of car.

Make a "bounding box"

Add a cube to your scene, set its display type to wire to make it easy to see within. (and make it unrenderable yada yada). Scale it to fit all the parts of your model. Apply scale. Select all objects (or all topmost parents of) and make the cube their parent.

enter image description here

Now you can scale the cube. The dimensions of the cube will be the dimensions of all objects. Applying scale to the cube will filter down parent chain, applying scale to all children.

I use this technique when modelling something like a car with ortho plans. Make the cube at the start to the dimensions of car.

Make a "bounding box"

Add a cube to your scene, set its display type to wire to make it easy to see within. (and make it unrenderable yada yada). Scale it to fit all the parts of your model.

Apply scale. This makes the scale of the box unity.

Select all objects (or all topmost parents of) and make the cube their parent.

enter image description here

Now you can scale the cube. The dimensions of the cube will be the dimensions of all objects. Applying scale to the cube will filter down parent chain, applying scale to all children.

I use this technique when modelling something like a car with ortho plans. Make the cube at the start to the dimensions of car.

Source Link
batFINGER
  • 85.2k
  • 10
  • 114
  • 244

Make a "bounding box"

Add a cube to your scene, set its display type to wire to make it easy to see within. (and make it unrenderable yada yada). Scale it to fit all the parts of your model. Apply scale. Select all objects (or all topmost parents of) and make the cube their parent.

enter image description here

Now you can scale the cube. The dimensions of the cube will be the dimensions of all objects. Applying scale to the cube will filter down parent chain, applying scale to all children.

I use this technique when modelling something like a car with ortho plans. Make the cube at the start to the dimensions of car.