diff --git a/Cargo.lock b/Cargo.lock
index 7bf9dc9..c83b083 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -3218,10 +3218,12 @@ dependencies = [
  "gdk",
  "glib",
  "gtk",
+ "implicit3d",
  "kiss3d",
  "kiss3ddeps",
  "nalgebra",
  "num-traits",
+ "piccolo",
  "pollster",
  "rayon",
  "serde",
@@ -3229,16 +3231,6 @@ dependencies = [
  "stl_io",
  "tessellation",
  "toml",
- "truescad_luascad",
-]
-
-[[package]]
-name = "truescad_luascad"
-version = "0.6.0"
-dependencies = [
- "implicit3d",
- "nalgebra",
- "piccolo",
 ]
 
 [[package]]
diff --git a/Cargo.toml b/Cargo.toml
index d5f8a79..e4e9370 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,5 +1,5 @@
 [workspace]
-members = [".", "luascad", "kiss3ddeps"]
+members = [".", "kiss3ddeps"]
 
 [package]
 name = "truescad"
@@ -12,13 +12,14 @@ dirs = "6.0"
 sourceview4 = "0.5"
 gdk = "0.18"
 cairo-rs = "0.18"
+implicit3d = "0.16"
 nalgebra = "0.34"
+piccolo = "0.3"
 rayon = "1.11"
 serde = { version = "1.0", features = ["derive"] }
 toml = "0.8"
 num-traits = "0.2"
 tessellation = "0.9"
-truescad_luascad = { path = "luascad" }
 kiss3ddeps = { path = "kiss3ddeps" }
 stl_io = "0.11"
 kiss3d = "0.37"
diff --git a/PLAN.md b/PLAN.md
index ef3d460..952f13e 100644
--- a/PLAN.md
+++ b/PLAN.md
@@ -32,7 +32,7 @@ The GTK desktop app is being abandoned in favor of a web-first approach.
 | `src/main.rs` | Replace with `wasm-bindgen` entry point |
 | Root `Cargo.toml` | Remove gtk/sourceview4/gdk/glib/cairo-rs/kiss3d/rayon/dirs/pollster; add `wasm-bindgen`, `web-sys` |
 | `kiss3ddeps/` | Delete (only existed for kiss3d) |
-| `luascad/` | Keep as-is (piccolo — WASM-ready) |
+| `luascad/` | Deleted — folded into `src/luascad.rs` |
 
 ## Frontend layout
 
@@ -56,6 +56,7 @@ node_modules/    ← CM6 (dev only, bundled by esbuild)
 ## Status
 
 - [x] piccolo migration complete (`luascad` uses piccolo 0.3, no native C deps)
+- [x] `luascad` subcrate folded into `src/luascad.rs` (workspace simplified)
 - [ ] Phase 1: Strip root crate
 - [ ] Phase 2: wasm-bindgen API
 - [ ] Phase 3: Verify WASM builds
diff --git a/luascad/Cargo.toml b/luascad/Cargo.toml
deleted file mode 100644
index 2a569f1..0000000
--- a/luascad/Cargo.toml
+++ /dev/null
@@ -1,14 +0,0 @@
-[package]
-name = "truescad_luascad"
-version = "0.6.0"
-authors = ["Henning Meyer <tutmann@gmail.com>"]
-edition = "2024"
-
-[lib]
-name = "truescad_luascad"
-path = "lib.rs"
-
-[dependencies]
-piccolo = "0.3"
-implicit3d = "0.16"
-nalgebra = "0.34"
diff --git a/luascad/lib.rs b/luascad/lib.rs
deleted file mode 100644
index 251f150..0000000
--- a/luascad/lib.rs
+++ /dev/null
@@ -1,8 +0,0 @@
-pub extern crate implicit3d;
-
-mod luascad;
-
-pub use luascad::{eval, EvalResult};
-
-type Float = f64;
-const EPSILON: f64 = f64::EPSILON;
diff --git a/src/editor.rs b/src/editor.rs
index 4e14298..97d8078 100644
--- a/src/editor.rs
+++ b/src/editor.rs
@@ -9,8 +9,7 @@ use std::fs::File;
 use std::io::prelude::*;
 use std::io::{BufReader, BufWriter};
 use tessellation::{ImplicitFunction, ManifoldDualContouring, Mesh};
-use truescad_luascad;
-use truescad_luascad::implicit3d;
+use implicit3d;
 
 #[derive(Clone)]
 pub struct Editor {
@@ -104,7 +103,7 @@ impl Editor {
                 true,
             )
             .unwrap();
-        match truescad_luascad::eval(&code_text) {
+        match crate::eval(&code_text) {
             Ok((print_result, maybe_object)) => {
                 writeln!(msg, "{}", print_result).unwrap();
                 match maybe_object {
diff --git a/src/lib.rs b/src/lib.rs
index 693ef6f..d6b43db 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -1,4 +1,5 @@
 pub mod editor;
+pub mod luascad;
 pub mod menu;
 pub mod mesh_view;
 pub mod object_widget;
@@ -6,4 +7,7 @@ pub mod render;
 pub mod settings;
 pub mod window;
 
+pub use luascad::eval;
+
 type Float = f64;
+const EPSILON: f64 = std::f64::EPSILON;
diff --git a/luascad/luascad.rs b/src/luascad.rs
similarity index 100%
rename from luascad/luascad.rs
rename to src/luascad.rs
diff --git a/src/render.rs b/src/render.rs
index 7f70c79..c1fbea6 100644
--- a/src/render.rs
+++ b/src/render.rs
@@ -2,7 +2,7 @@ use super::Float;
 use nalgebra as na;
 use rayon::prelude::*;
 use std::cmp;
-use truescad_luascad::implicit3d::Object;
+use implicit3d::Object;
 
 const EPSILON: Float = 0.003;
 const APPROX_SLACK: Float = 0.1;
diff --git a/luascad/tests/eval.rs b/tests/eval.rs
similarity index 99%
rename from luascad/tests/eval.rs
rename to tests/eval.rs
index 168ad8b..30f96ee 100644
--- a/luascad/tests/eval.rs
+++ b/tests/eval.rs
@@ -1,6 +1,6 @@
+use implicit3d::Object;
 use nalgebra as na;
-use truescad_luascad::eval;
-use truescad_luascad::implicit3d::Object;
+use truescad::eval;
 
 // ── helpers ──────────────────────────────────────────────────────────────────