diff --git a/docs/machines/3DPrinter/Step by Step Assembly.md b/docs/machines/3DPrinter/Step by Step Assembly.md
index 42e9cb28d887479ba4338473a5aa10fe79c7997e..c4163416ee79638e663216c2ec11a59080057073 100644
--- a/docs/machines/3DPrinter/Step by Step Assembly.md	
+++ b/docs/machines/3DPrinter/Step by Step Assembly.md	
@@ -35,7 +35,18 @@ The build instructions below are divided into two parts, namely pre-assembly and
    
 ### Subassembly 2.1 XY Idler Assembly Left
 
-- Exploded view of XY Idler showing assembly steps
+| Exploded view of XY Idler showing assembly steps |
+| ---- |
+| <figure class="video_container">
+  <video controls="true" allowfullscreen="true" poster="pictures/xy_idler/edited/EV_xy_idler.png">
+    <source src="pictures/xy_idler/edited/VID_xy_idler_assembly.mp4" type="video/mp4">
+  </video>
+</figure> |
+|1. Tighten M3 bolts with M3 Allen Key |
+
+
+
+ Exploded view of XY Idler showing assembly steps
 
 <figure class="video_container">
   <video controls="true" allowfullscreen="true" poster="pictures/xy_idler/edited/EV_xy_idler.png">
@@ -43,7 +54,13 @@ The build instructions below are divided into two parts, namely pre-assembly and
   </video>
 </figure>
 
-#### Step 1 - Prepare parts required for build.
+#### Before and After Assembly
+
+| Before Assembly | After Assembly |
+| ---- | ---- |
+| <img src="pictures/xy_idler/edited/C0_before_xy_idler.PNG" width="250" /> *Figure 2: Insert M3 nuts* |  <img src="pictures/xy_idler/edited/C0_after_xy_idler.PNG" width="250" /> *Figure 2: Insert M3 nuts* |
+
+#### Step 0 - Prepare parts required for build.
 
 1. Printed XY Idler bracket - Left (1)
 2. M3 Nut (2)
@@ -55,7 +72,7 @@ The build instructions below are divided into two parts, namely pre-assembly and
 
 <img src="pictures/xy_idler/edited/B1_xy_idler.jpg" width="600" />*Figure 1: Parts requiered to assemble XY Idler assembly (Left)*
 
-#### Step 2 - Insert 2x M3 nuts into printed XY Idler bracket.
+#### Step 1 - Insert 2x M3 nuts into printed XY Idler bracket.
 
 <img src="pictures/xy_idler/edited/C1_xy_idler.PNG" width="250" />*Figure 2: Insert M3 nuts*