diff --git a/.gitignore b/.gitignore
index eb83c85..54b33ce 100644
--- a/.gitignore
+++ b/.gitignore
@@ -10,7 +10,6 @@ luac.out
 *.o
 *.os
 *.ko
-*.obj
 *.elf
 
 # Precompiled Headers
diff --git a/techpack_stairway/models/techpack_stairway_slope.obj b/techpack_stairway/models/techpack_stairway_slope.obj
new file mode 100644
index 0000000..f96e575
--- /dev/null
+++ b/techpack_stairway/models/techpack_stairway_slope.obj
@@ -0,0 +1,56 @@
+g top
+v 0.498000 0.498000 0.498000
+v -0.498000 0.498000 0.498000
+v -0.498000 -0.498000 -0.498000
+v 0.498000 -0.498000 -0.498000
+vt 1.0000 1.0000
+vt 0.0000 1.0000
+vt 0.0000 0.0000
+vt 1.0000 0.0000
+vn 0.0000 0.7071 -0.7071
+s off
+f 2/1/1 1/2/1 4/3/1 3/4/1
+g bottom
+v -0.498000 -0.498000 0.498000
+v 0.498000 -0.498000 0.498000
+v -0.498000 -0.498000 -0.498000
+v 0.498000 -0.498000 -0.498000
+vt 0.0000 0.0000
+vt 1.0000 0.0000
+vt 1.0000 1.0000
+vt 0.0000 1.0000
+vn 0.0000 -1.0000 -0.0000
+s off
+f 6/5/2 5/6/2 7/7/2 8/8/2
+g right
+v -0.498000 0.498000 0.498000
+v -0.498000 -0.498000 0.498000
+v -0.498000 -0.498000 -0.498000
+vt 1.0000 1.0000
+vt 0.0000 0.0000
+vt 1.0000 0.0000
+vn -1.0000 0.0000 0.0000
+s off
+f 9/9/3 11/10/3 10/11/3
+g left
+v 0.498000 0.498000 0.498000
+v 0.498000 -0.498000 0.498000
+v 0.498000 -0.498000 -0.498000
+vt 0.0000 1.0000
+vt 0.0000 0.0000
+vt 1.0000 0.0000
+vn 1.0000 0.0000 0.0000
+s off
+f 12/12/4 13/13/4 14/14/4
+g back
+v 0.498000 0.498000 0.498000
+v -0.498000 0.498000 0.498000
+v -0.498000 -0.498000 0.498000
+v 0.498000 -0.498000 0.498000
+vt 1.0000 1.0000
+vt 0.0000 1.0000
+vt 0.0000 0.0000
+vt 1.0000 0.0000
+vn 0.0000 -0.0000 1.0000
+s off
+f 15/15/5 16/16/5 17/17/5 18/18/5