diff --git a/mods/stairs/models/stairs_stair.obj b/mods/stairs/models/stairs_stair.obj
index 929c733f..45882c6e 100644
--- a/mods/stairs/models/stairs_stair.obj
+++ b/mods/stairs/models/stairs_stair.obj
@@ -1,43 +1,113 @@
-v -.5 0 -.5
-v -.5 -.5 -.5
-v -.5 0 0
-v .5 0 0
-v .5 -.5 -.5
-v .5 0 -.5
-v -.5 -.5 .5
-v .5 -.5 .5
-v -.5 .5 0
-v .5 .5 0
-v -.5 .5 .5
-v .5 .5 .5
-vt 0 .5
-vt 0 0
-vt .5 .5
-vt 1 0
-vt 1 .5
-vt 1 1
-vt 0 1
-vt .5 1
-vt 1 0
-vt 1 1
-vt 0 1
-vt 0 0
-vn -1 0 0
-vn 1 0 0
-vn 0 0 -1
-vn 0 -1 0
-vn 0 1 0
-vn 0 0 1
+# Blender v2.72 (sub 0) OBJ File: ''
+# www.blender.org
+mtllib stairs.mtl
+o stairs_top
+v -0.500000 0.000000 -0.500000
+v -0.500000 0.000000 0.000000
+v 0.500000 0.000000 0.000000
+v 0.500000 0.000000 -0.500000
+v -0.500000 0.500000 0.000000
+v 0.500000 0.500000 0.000000
+v -0.500000 0.500000 0.500000
+v 0.500000 0.500000 0.500000
+vt 0.000000 0.000000
+vt 1.000000 0.000000
+vt 1.000000 0.500000
+vt 0.000000 0.500000
+vt 1.000000 1.000000
+vt 0.000000 1.000000
+vn 0.000000 1.000000 0.000000
+g stairs_top
+usemtl None
 s off
-f 1/1/1 2/2/1 3/3/1
-f 4/3/2 5/4/2 6/5/2
-f 2/4/3 1/5/3 6/1/3 5/2/3
-f 7/4/4 2/6/4 5/7/4 8/2/4
-f 6/2/5 1/4/5 3/5/5 4/1/5
-f 3/5/3 9/6/3 10/7/3 4/1/3
-f 11/6/5 12/7/5 10/1/5 9/5/5
-f 4/3/2 10/8/2 12/7/2
-f 8/9/6 12/10/6 11/11/6 7/12/6
-f 3/3/1 11/6/1 9/8/1
-f 2/2/1 7/4/1 11/6/1
-f 5/4/2 12/7/2 8/2/2
+f 4/1/1 1/2/1 2/3/1 3/4/1
+f 7/5/1 8/6/1 6/4/1 5/3/1
+o stairs_bottom
+v -0.500000 -0.500000 -0.500000
+v 0.500000 -0.500000 -0.500000
+v -0.500000 -0.500000 0.500000
+v 0.500000 -0.500000 0.500000
+vt 1.000000 0.000000
+vt 1.000000 1.000000
+vt 0.000000 1.000000
+vt 0.000000 0.000000
+vn 0.000000 -1.000000 -0.000000
+g stairs_bottom
+usemtl None
+s off
+f 11/7/2 9/8/2 10/9/2 12/10/2
+o stairs_right
+v -0.500000 0.000000 -0.500000
+v -0.500000 -0.500000 -0.500000
+v -0.500000 0.000000 0.000000
+v -0.500000 -0.500000 0.500000
+v -0.500000 0.500000 0.000000
+v -0.500000 0.500000 0.500000
+vt 0.000000 0.500000
+vt 0.000000 0.000000
+vt 0.500000 0.500000
+vt 1.000000 1.000000
+vt 0.500000 1.000000
+vt 1.000000 0.000000
+vn -1.000000 0.000000 0.000000
+g stairs_right
+usemtl None
+s off
+f 13/11/3 14/12/3 15/13/3
+f 15/13/3 18/14/3 17/15/3
+f 14/12/3 16/16/3 18/14/3
+o stairs_left
+v 0.500000 0.000000 0.000000
+v 0.500000 -0.500000 -0.500000
+v 0.500000 0.000000 -0.500000
+v 0.500000 -0.500000 0.500000
+v 0.500000 0.500000 0.000000
+v 0.500000 0.500000 0.500000
+vt 0.500000 0.500000
+vt 1.000000 0.000000
+vt 1.000000 0.500000
+vt 0.500000 1.000000
+vt 0.000000 1.000000
+vt 0.000000 0.000000
+vn 1.000000 0.000000 0.000000
+g stairs_left
+usemtl None
+s off
+f 19/17/4 20/18/4 21/19/4
+f 19/17/4 23/20/4 24/21/4
+f 20/18/4 24/21/4 22/22/4
+o stairs_back
+v -0.500000 -0.500000 0.500000
+v 0.500000 -0.500000 0.500000
+v -0.500000 0.500000 0.500000
+v 0.500000 0.500000 0.500000
+vt 1.000000 0.000000
+vt 1.000000 1.000000
+vt 0.000000 1.000000
+vt 0.000000 0.000000
+vn 0.000000 -0.000000 1.000000
+g stairs_back
+usemtl None
+s off
+f 26/23/5 28/24/5 27/25/5 25/26/5
+o stairs_front
+v -0.500000 0.000000 -0.500000
+v -0.500000 -0.500000 -0.500000
+v -0.500000 0.000000 0.000000
+v 0.500000 0.000000 0.000000
+v 0.500000 -0.500000 -0.500000
+v 0.500000 0.000000 -0.500000
+v -0.500000 0.500000 0.000000
+v 0.500000 0.500000 0.000000
+vt 1.000000 0.000000
+vt 1.000000 0.500000
+vt 0.000000 0.500000
+vt 0.000000 0.000000
+vt 1.000000 1.000000
+vt 0.000000 1.000000
+vn 0.000000 0.000000 -1.000000
+g stairs_front
+usemtl None
+s off
+f 30/27/6 29/28/6 34/29/6 33/30/6
+f 31/28/6 35/31/6 36/32/6 32/29/6