blockbench-modeling_skill

Overview

This skill enables creating and editing 3D models in Blockbench using the MCP toolset. It covers both cube-based Minecraft-style modeling and freeform mesh editing, plus organization tools for groups/bones. Use it to build characters, props, and organic shapes with precise control over vertices, faces, and UVs.

How this skill works

You issue discrete commands to place and modify cubes, create and edit meshes, and manage element/group hierarchies. Tools include cube placement and modification, mesh primitives (sphere, cylinder), vertex/face edit operations (extrude, subdivide, knife, merge), and organizational actions (add_group, duplicate_element, list_outline). Commands accept element lists, transforms, textures, and selection modes for targeted edits.

When to use it

• Building Minecraft-style models quickly with cube geometry and auto-UVs
• Creating organic or complex shapes using mesh primitives and vertex editing
• Preparing a rigged hierarchy by adding groups/bones and setting origins for pivots
• Editing or optimizing mesh topology: subdivide, merge, or knife-cut for new edge loops
• Duplicating symmetrical parts or organizing large models using groups and outline listing

Best practices

• Create group/bone hierarchy before placing geometry so pivots are correct for animation
• Use faces=true on cubes for automatic UVs when texturing Minecraft-style models
• Set group origins at joint pivot points to simplify rotations and rigging
• Subdivide only where needed to preserve performance; merge close vertices after edits
• Duplicate symmetrical elements with offset instead of manual re-creation for accuracy

Example use cases

• Assemble a Minecraft character: add_group for limbs, place_cube for head/body/limbs, then duplicate arms and legs
• Model a smooth creature: create_sphere, subdivide, select top vertices and move to form features
• Make a decorative pillar: create_cylinder, extrude top faces, cap ends and knife-cut grooves
• Convert blocky props to optimized meshes by placing cubes then using knife_tool and merge_mesh_vertices
• Prepare an animated tool by setting group origins at handles and rotating modified cube elements