使い方
- インストールコマンドをコピーし、自分の環境へ導入する前にソースを確認します。
- 必要なツール、認証情報、対応環境を原文で確認します。
- 入力と成果物を指定し、出力を資料と照合します。
npx skills add https://github.com/mitsuhiko/agent-stuff --skill openscad開始前の確認
- 導入にはモデル契約、API枠、ファイルへのアクセス許可は含まれません。
- スター数や導入数は活動の指標であり、独立した品質・安全性試験ではありません。
見出し、例、コード、表、リンク、参照画像を含む原文を表示しています。
OpenSCAD Skill
Create, validate, and export OpenSCAD 3D models. Supports parameter customization, visual preview from multiple angles, and STL export for 3D printing platforms like MakerWorld.
Prerequisites
OpenSCAD must be installed. Install via Homebrew:
brew install openscadTools
This skill provides several tools in the tools/ directory:
Preview Generation
# Generate a single preview image
./tools/preview.sh model.scad output.png [--camera=x,y,z,tx,ty,tz,dist] [--size=800x600]
# Generate multi-angle preview (front, back, left, right, top, iso)
./tools/multi-preview.sh model.scad output_dir/STL Export
# Export to STL for 3D printing
./tools/export-stl.sh model.scad output.stl [-D 'param=value']Parameter Extraction
# Extract customizable parameters from an OpenSCAD file
./tools/extract-params.sh model.scadValidation
# Check for syntax errors and warnings
./tools/validate.sh model.scadVisual Validation (Required)
Always validate your OpenSCAD models visually after creating or modifying them.
After writing or editing any OpenSCAD file:
- Generate multi-angle previews using
multi-preview.sh - View each generated image using the
readtool - Check for issues from multiple perspectives:
- Front/back: Verify symmetry, features, and proportions
- Left/right: Check depth and side profiles
- Top: Ensure top features are correct
- Isometric: Overall shape validation
- Iterate if needed: If something looks wrong, fix the code and re-validate
This catches issues that syntax validation alone cannot detect:
- Inverted normals or inside-out geometry
- Misaligned features or incorrect boolean operations
- Proportions that don't match the intended design
- Missing or floating geometry
- Z-fighting or overlapping surfaces
Never deliver an OpenSCAD model without visually confirming it looks correct from multiple angles.
Workflow
1. Creating an OpenSCAD Model
Write OpenSCAD code with customizable parameters at the top:
// Customizable parameters
wall_thickness = 2; // [1:0.5:5] Wall thickness in mm
width = 50; // [20:100] Width in mm
height = 30; // [10:80] Height in mm
rounded = true; // Add rounded corners
// Model code below
module main_shape() {
if (rounded) {
minkowski() {
cube([width - 4, width - 4, height - 2]);
sphere(r = 2);
}
} else {
cube([width, width, height]);
}
}
difference() {
main_shape();
translate([wall_thickness, wall_thickness, wall_thickness])
scale([1 - 2*wall_thickness/width, 1 - 2*wall_thickness/width, 1])
main_shape();
}Parameter comment format:
// [min:max]- numeric range// [min:step:max]- numeric range with step// [opt1, opt2, opt3]- dropdown options// Description text- plain description
2. Validate the Model
./tools/validate.sh model.scad3. Generate Previews
Generate preview images to visually validate the model:
./tools/multi-preview.sh model.scad ./previews/This creates PNG images from multiple angles. Use the read tool to view them.
4. Export to STL
./tools/export-stl.sh model.scad output.stl
# With custom parameters:
./tools/export-stl.sh model.scad output.stl -D 'width=60' -D 'height=40'Camera Positions
Common camera angles for previews:
- Isometric:
--camera=0,0,0,45,0,45,200 - Front:
--camera=0,0,0,90,0,0,200 - Top:
--camera=0,0,0,0,0,0,200 - Right:
--camera=0,0,0,90,0,90,200
Format: x,y,z,rotx,roty,rotz,distance
MakerWorld Publishing
For MakerWorld, you typically need:
- STL file(s) exported via
export-stl.sh - Preview images (at least one good isometric view)
- A description of customizable parameters
Consider creating a model.json with metadata:
{
"name": "Model Name",
"description": "Description for MakerWorld",
"parameters": [...],
"tags": ["functional", "container", "organizer"]
}Example: Full Workflow
# 1. Create the model (write .scad file)
# 2. Validate syntax
./tools/validate.sh box.scad
# 3. Generate multi-angle previews
./tools/multi-preview.sh box.scad ./previews/
# 4. IMPORTANT: View and validate ALL preview images
# Use the read tool on each PNG file to visually inspect:
# - previews/box_front.png
# - previews/box_back.png
# - previews/box_left.png
# - previews/box_right.png
# - previews/box_top.png
# - previews/box_iso.png
# Look for geometry issues, misalignments, or unexpected results.
# If anything looks wrong, go back to step 1 and fix it!
# 5. Extract and review parameters
./tools/extract-params.sh box.scad
# 6. Export STL with default parameters
./tools/export-stl.sh box.scad box.stl
# 7. Export STL with custom parameters
./tools/export-stl.sh box.scad box_large.stl -D 'width=80' -D 'height=60'Remember: Never skip the visual validation step. Many issues (wrong dimensions, boolean operation errors, inverted geometry) are only visible when you actually look at the rendered model.
OpenSCAD Quick Reference
Basic Shapes
cube([x, y, z]);
sphere(r = radius);
cylinder(h = height, r = radius);
cylinder(h = height, r1 = bottom_r, r2 = top_r); // coneTransformations
translate([x, y, z]) object();
rotate([rx, ry, rz]) object();
scale([sx, sy, sz]) object();
mirror([x, y, z]) object();Boolean Operations
union() { a(); b(); } // combine
difference() { a(); b(); } // subtract b from a
intersection() { a(); b(); } // overlap onlyAdvanced
linear_extrude(height) 2d_shape();
rotate_extrude() 2d_shape();
hull() { objects(); } // convex hull
minkowski() { a(); b(); } // minkowski sum (rounding)2D Shapes
circle(r = radius);
square([x, y]);
polygon(points = [[x1,y1], [x2,y2], ...]);
text("string", size = 10);
