claude

jewelcraft

Teaches Claude to model and check jewelry in Blender with the JewelCraft add-on over a Blender MCP connection — prong grip, seat clearance and stone overlaps measured rather than eyeballed, ring sizes read from the band's actual inner surface, metal weight with overlapping parts counted once, print/cast checks that confirm an STL comes out in millimetres, and metalwork built from editable paths fused with Geometry Nodes, split into a cast part and a hand-built wire head with a 1:1 bending template, with the add-on's scripting traps documented and worked around

2 on GitHubby bobtatv0.3.0MITupdated todaydesign
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Plugin jewelcraft from marketplace bobtat-plugins in bobtat/claude-plugins. Commands read from the repo's manifest — today.

What it installs

Skills (11)

  • build-from-paths

    Builds jewelry metalwork in Blender (heads, prongs, galleries, shoulders, wire work) from editable paths fused into solids by Geometry Nodes SDF volumes with filleted joints, split the way it will be made (a cast part plus hand-built wire parts), measured and rendered after every change, and handed

  • build-ring

    Step-by-step workflow for building a ring in Blender with JewelCraft (a sized band from a flat profile, a stone, prongs and a seat), with a check after each stage. Use when the user asks to "build a ring", "make a solitaire", "model a band in size 7", "make an engagement ring", or wants to start a r

  • check-prongs

    Measures how each prong grips a stone's girdle in a Blender/JewelCraft design and suggests corrected settings, including corner prongs on elongated cushions. Use when the user asks "check my prongs", "are the prongs touching the stone", "prong grip", "fix the prongs", or after adding prongs to a gem

  • check-seat

    Verifies a stone seat in a Blender/JewelCraft design, checking that the cutter fits the stone, the Boolean cut is clean, and the stone clears the metal. Use when the user asks "check the seat", "does the stone fit", "is the cutter right", "does the stone collide with the metal", or after cutting a s

  • check-setup

    Checks that Blender, the Blender MCP connection and the JewelCraft add-on are ready for jewelry work. Use when the user says "is JewelCraft working", "is Blender ready for JewelCraft", "check my jewelry setup", or at the start of a JewelCraft session before building or measuring anything.

  • jewelcraft-blender

    Core knowledge for modeling jewelry in Blender with the JewelCraft add-on through Python or a Blender MCP connection. Use when adding gems, prongs or cutters, sizing ring shanks, reading carat weights or metal weights, or scripting any JewelCraft tool. Other skills in the jewelcraft plugin build on

  • print-cast-check

    Checks a jewelry model (ring, pendant, setting) in Blender before 3D printing or casting (closed mesh, inward normals, minimum wall thickness, stone/metal collisions, millimetre units, casting shrinkage) and optionally exports and verifies an STL. Use when the user asks "is this ring ready to print"

  • ring-size-check

    Measures the actual inside diameter of a ring band in Blender and reports its size in US, UK, Swiss, Japanese and Hong Kong systems, or converts a ring size to a diameter. Use when the user asks "what size is this ring", "check the ring size", "is this a size 7", "inside diameter", or "what diameter

  • scene-setup

    Sets up a studio scene in Blender for reviewing a jewelry design (fixed top, side, end and perspective cameras, 18K yellow gold and diamond preview materials, neutral studio lighting, Cycles render settings), renders every view to PNGs with a contact sheet, and removes it all again on request. Use w

  • stone-report

    Lists every stone in the open Blender/JewelCraft design with cut, size, carat weight and quantity, and checks for overlapping stones, without opening a browser. Use when the user asks "how many carats", "list the stones", "stone report", "diamond weight", or "do any stones overlap".

  • weigh-piece

    Calculates the metal volume and weight of a jewelry piece in Blender for each alloy (gold karats, platinum, palladium, silver), counting overlapping parts only once. Use when the user asks "how much will this weigh", "weight in 18K", "metal weight", "how much gold", or "volume of the ring".

View source on GitHub

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