diff --git a/notes.md b/notes.md
index f3263fbc..b289e623 100644
--- a/notes.md
+++ b/notes.md
@@ -6,6 +6,7 @@
 
 * `B` origin (and bed size) bug (Onshape?) when switching device modes
 * `B` can't drag slider bar on ipad / ios -- touch pad scrolling dodgy
+* `B` prevent or ask for really large models when scaling (crash ui)
 
 * `P` duplicate objects should share same slice data unless rotated or scaled
 * `P` allow selection to be decimated on demand (context menu?)
diff --git a/src/kiri-mode/fdm/post.js b/src/kiri-mode/fdm/post.js
index 4b25ad4a..d418cd33 100644
--- a/src/kiri-mode/fdm/post.js
+++ b/src/kiri-mode/fdm/post.js
@@ -241,7 +241,7 @@ function cullIntersections() {
                 if (bl.del) {
                     continue;
                 }
-                if (util.intersect(al.a, al.b, bl.a, bl.b, base.key.SEGINT)) {
+                if (base.util.intersect(al.a, al.b, bl.a, bl.b, base.key.SEGINT)) {
                     if (al.l < bl.l) {
                         bl.del = true;
                     } else {