diff --git a/src/voxel/vx_intersection.scad b/src/voxel/vx_intersection.scad
index f89391e6..ef264881 100644
--- a/src/voxel/vx_intersection.scad
+++ b/src/voxel/vx_intersection.scad
@@ -8,14 +8,16 @@
 *
 **/ 
 
-use <../util/sort.scad>;
-use <../util/has.scad>;
+use <../util/set/hashset.scad>;
+use <../util/set/hashset_has.scad>;
+use <../__comm__/_pt3_hash.scad>;
 
 function vx_intersection(points1, points2) =
     let(
         leng1 = len(points1),
         leng2 = len(points2),
         pts_pair = leng1 > leng2 ? [points1, points2] : [points2, points1],
-        sorted = sort(pts_pair[1], by = "vt")
+        hash = function(p) _pt3_hash(p),
+        sorted = hashset(pts_pair[1], hash = hash)
     )
-    [for(p = pts_pair[0]) if(has(sorted, p, sorted = true)) p];
\ No newline at end of file
+    [for(p = pts_pair[0]) if(hashset_has(sorted, p, hash = hash)) p];
\ No newline at end of file