# Tutorial - Modeling machine screw in SolidWorks?

Here is the tutorial.

1. ### Step 1:

Start SolidWorks in Part mode.

2. ### Step 2:

Top plane>>Sketch.

3. ### Step 3:

Draw a circle of 10mm dia.

4. ### Step 4:

Extrude it by 25mm.

5. ### Step 5:

Front Plane>>Sketch and then draw this profile.

6. ### Step 6:

Trim down the half of the arc.

Revolve it.

8. ### Step 8:

Reference geometry>>plane.

9. ### Step 9:

Under the revolve sketch select the point and then top plane.

10. ### Step 10:

Plane1>>sketch.

11. ### Step 11:

Draw a rectangle of 2mm width.

12. ### Step 12:

Extrude cut at 4mm.

Chamfer.

14. ### Step 14:

Bottom edge at 2mm and 45º.

15. ### Step 15:

Bottom face>>Sketch.

16. ### Step 16:

Convert the outer edge.

17. ### Step 17:

Helix and spiral.

18. ### Step 18:

Pitch=2mm and Revolutions=10.5 at start angle=0º.

19. ### Step 19:

Right plane>>sketch.

20. ### Step 20:

Use polygon tool and make this profile.

Sweep cut.

22. ### Step 22:

Select the triangle as the sketch and the helix as the path.

23. ### Step 23:

We have the screw.