updated X axis instructions

docs/machines/3DPrinter/Step by Step Assembly.md

@@ -213,7 +213,7 @@ Parts required
 - Printed DZD Cover
 - Printed tensioning bolt
 - Printed tensioning nut
-- 7x M3 nuts
+- 4x M3 nuts
 - 2x smooth idler pulley
 - 1x teethed idler pulley
 - Nema 17 Motor
@@ -601,7 +601,7 @@ Instructions
 
 - Insert M3 nut and M3x20mm SHCS into printed XY motor bracket left
 - Screw the M3x20mm SHCS slightly into the M3 nut but do not tighten
-- Mount drive pulley on Nema17 motor shaft
+- Mount drive pulley on Nema17 motor shaft with height of pulley top from shaft top 5.5 mm
 - Tighten 2x set screws on drive pulley with 1 set screw tightened against flat side of motor shaft
 - Install XY motor bracket left on motor with 1x M3x8mm SHCS and 2x M3x10mm SHCS using 2.5mm allen wrench
 - Screw 1x M5x12mm BHCS and 1x 30-M5 hammernut into closed hole of motor bracket
@@ -627,7 +627,8 @@ Tools
 
 Instructions
 
-- perform all steps as in step 8.3 to assemble XY motor assembly right 
+- perform all steps as in step 8.3 to assemble XY motor assembly right except for the mounting of the pulley on the right motor
+- Mount drive pulley on Nema17 motor shaft with height of pulley top from shaft top 1.9 mm
 
 ### 8.5 Y-axis left installation on frame
 
@@ -662,11 +663,11 @@ Instructions
 
 ## 9. X-axis
 
-### 9.3 Y-Carriage (2)
+### 9.1 Prepapre (2x) Y-Carriage
 
 - Parts required
 
-  - 1x Printed Y-Carriage
+  - 1x printed Y-Carriage
   - 4x M3 Heatset Insert
   - 4x M3 Nut
   - 2x M3x14mm SHCS
@@ -689,11 +690,11 @@ Instructions
   - Screw the M3x30mm SHCS all the way
   - Do not overtighten! The pulley should rotate freely.
 
-### 9.4 X-Carriage
+### 9.2 Prepapre X-Carriage
 
 - Parts required
 
-  - 1x Printed X-Carriage
+  - 1x printed X-Carriage
   - 10x M3 Heatset Inserts
   - 4x M3x14mm SHCS
   - 4x dowel pins
@@ -701,11 +702,12 @@ Instructions
 
 - Instructions:
 
-  - Insert M3 heatset inserts into printed X-Carriage
-  - Screw in 4x M3x14mm SHCS partly
-  - Insert 4x dowel pins
+  - Insert M3 heatset inserts into printed X-Carriage with soldering iron
+  - press-fit 4x dowel pins
+  - Screw in 4x M3x14mm SHCS partly with hand
   - Insert 3x LM8UU misumi bearings
 
+### 9.3 Prepare X-axis
 
 1.  X-axis Assembly (1)
    1. Y Carriage Pre-assembled (Left)
@@ -723,6 +725,9 @@ Instructions
       4. Belt Clamp + X Cable Chain Connector (1)
       5. 3mm dia 12mm long Dowel Pins (4)
 
+### 9.4 Install X-axis on Y-axis rods
+
+
 ## 10. XY Belts installation
 
 Parts required
@@ -800,10 +805,10 @@ Instructions
     1.  Dibond Plate 218x329mm (1)
     2.  MKS Controller board
         1.  Controller Board mounting bracket
-        2.  4x M3x12mm SHCS
+        2.  4x M3x14mm SHCS
     3. 24 to 12V Converter (1)
        1. LM2596 Buck Converter (1)
-       2. 4x M3x12mm SHCS
+       2. 4x M3x14mm SHCS
     4. LED Controller
        1. 2x M3x6mm SHCS
     5. Electronics Plate Mounting Bracket (4)
@@ -934,6 +939,8 @@ Instructions
 
 - Insert 5x Heatset inserts 
 
+### 18.2 Mount Exhaust on frame
+
 ## 19. Spool Holder & Filament guide
 
 Parts