You probably mean “How do you block out blobs in Blender?” In Blender, start by using simple shapes to rough in the form, then refine it step by step. A beginner-friendly blocking workflow is exactly what Blender tutorials on blockouts recommend: build the big shapes first, then adjust proportions before adding detail.

Quick workflow

  1. Add a primitive shape, like a cube or sphere.
  2. Scale it to match the main silhouette.
  3. Duplicate or combine more simple shapes for arms, limbs, panels, or extra masses.
  4. Use modifiers like Mirror or Subdivision when helpful.
  5. Keep everything low-detail until the overall shape looks right.

If you meant “block out”

“Block out” is the common 3D term for this process. It means making a rough gray-box version of a model or scene so you can judge composition, proportions, and spacing before committing to detail.

Useful Blender habits

  • Work in front, side, and perspective views to check the shape from multiple angles.
  • Focus on silhouette first, detail second.
  • Don’t over-model too early.
  • For character or hard-surface work, a rough blockout is a normal first pass before sculpting or refining.

One-sentence version

Add simple meshes, scale them into the major forms, and refine only after the blockout feels balanced.

TL;DR: use basic shapes, build the large forms first, and treat the first version as a rough blockout rather than a finished model.