Step 19: Now with slice plane make the 2 edges. First edge for center and second edge create on the bottom of model. Like step 5 create a mirror. Select the polygon that show in the picture and extrude that about 0.03 and through chamfer edge smooth the new edge created by extrude







Step 20: Create a new rectangle with these parameters. Length=1.237, Width= 0.195, Corner Radius=0.076. Then with shape merge create a similar edge on the model that created previously. Then extrude new edge about -0.01



Step 21: Create a cylinder with these parameters:
Radius: 0.455
Height: 4.373
Sides: 47
Your work should be similar to this picture.





Step 22: Now create the following objects as shown in the below images.

Spring parameters
Diameter: 0.15
Turns: 20
Segments/turn: 40 or 60

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