diff --git a/src/autorouter/autorouter.rs b/src/autorouter/autorouter.rs
index 5fc5428..0d208f1 100644
--- a/src/autorouter/autorouter.rs
+++ b/src/autorouter/autorouter.rs
@@ -14,10 +14,10 @@ use thiserror::Error;
 
 use crate::{
     autorouter::{
-        board::Board,
         ratsnest::{Ratsnest, RatvertexIndex},
         selection::Selection,
     },
+    board::Board,
     drawing::{
         dot::FixedDotIndex,
         graph::{GetLayer, GetMaybeNet},
diff --git a/src/autorouter/mod.rs b/src/autorouter/mod.rs
index fe4857d..41fb8d7 100644
--- a/src/autorouter/mod.rs
+++ b/src/autorouter/mod.rs
@@ -1,5 +1,4 @@
 mod autorouter;
-pub mod board;
 pub mod history;
 pub mod invoker;
 pub mod ratsnest;
diff --git a/src/autorouter/selection.rs b/src/autorouter/selection.rs
index 3f955b4..6f19ba1 100644
--- a/src/autorouter/selection.rs
+++ b/src/autorouter/selection.rs
@@ -3,7 +3,7 @@ use std::collections::HashSet;
 use serde::{Deserialize, Serialize};
 
 use crate::{
-    autorouter::board::Board,
+    board::Board,
     drawing::{
         graph::{GetLayer, MakePrimitive, PrimitiveIndex},
         rules::RulesTrait,
diff --git a/src/bin/topola-egui/overlay.rs b/src/bin/topola-egui/overlay.rs
index 84b0aad..d56e14c 100644
--- a/src/bin/topola-egui/overlay.rs
+++ b/src/bin/topola-egui/overlay.rs
@@ -5,7 +5,8 @@ use rstar::AABB;
 use spade::InsertionError;
 
 use topola::{
-    autorouter::{board::Board, ratsnest::Ratsnest, selection::Selection},
+    autorouter::{ratsnest::Ratsnest, selection::Selection},
+    board::Board,
     drawing::{
         graph::{GetLayer, MakePrimitive},
         primitive::MakePrimitiveShape,
diff --git a/src/autorouter/board.rs b/src/board/board.rs
similarity index 100%
rename from src/autorouter/board.rs
rename to src/board/board.rs
diff --git a/src/board/mod.rs b/src/board/mod.rs
new file mode 100644
index 0000000..928e4c1
--- /dev/null
+++ b/src/board/mod.rs
@@ -0,0 +1,3 @@
+mod board;
+
+pub use board::*;
diff --git a/src/dsn/design.rs b/src/dsn/design.rs
index 6e2c9b2..4c030dc 100644
--- a/src/dsn/design.rs
+++ b/src/dsn/design.rs
@@ -4,7 +4,7 @@ use geo::{point, Point, Rotate, Translate};
 use thiserror::Error;
 
 use crate::{
-    autorouter::board::Board,
+    board::Board,
     drawing::{dot::FixedDotWeight, seg::FixedSegWeight, Drawing},
     dsn::{
         de,
diff --git a/src/lib.rs b/src/lib.rs
index fc75618a..7e09708 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -4,6 +4,7 @@ pub mod graph;
 #[macro_use]
 pub mod drawing;
 pub mod autorouter;
+pub mod board;
 pub mod dsn;
 pub mod geometry;
 pub mod layout;
diff --git a/tests/common/mod.rs b/tests/common/mod.rs
index f2dedba..4a7aac8 100644
--- a/tests/common/mod.rs
+++ b/tests/common/mod.rs
@@ -3,11 +3,11 @@ use std::fs::File;
 use petgraph::{stable_graph::NodeIndex, unionfind::UnionFind, visit::NodeIndexable};
 use topola::{
     autorouter::{
-        board::Board,
         history::HistoryError,
         invoker::{Invoker, InvokerError},
         Autorouter,
     },
+    board::Board,
     drawing::{
         graph::{GetLayer, GetMaybeNet},
         rules::RulesTrait,