# Siemens NX/Unigraphics: Waskom Build

I built this very quickly, and that's probably going to be apparent, reading through this tutorial. So, this is a somewhat brief tutorial covering the design of a waskom or washing basin. This tutorial does assume that you have an intermediate level of experience and as such, does not cover every aspect of this build in detail. It is more of a, how to get from point 'A' to 'Z' type tutorial. No dimensions are shown, so if you are attempting to build your own, just use dimensions that look 'good' to you and create the shape(s) you prefer.

This was built in NX12, but I tried to build this such that anyone using NX6 or so should have all the tools used here. Hence, none of the newer conic fillets, etc.

1. ### Step 1: Build a sheet body (extrude)

Sketch a 45º open-ended angle as shown. Make it symmetric about your X or Y axis and extrude to a height that is greater than the planned waskom height.

2. ### Step 2: Sketch & revolve

Sketch the outer section of the waskom profile for revolve

3. ### Step 3: Trim the revolve

Alternatively, you can revolve from one side of the sheet until the next. The 45º trim sheet is also used in later trim operations.

4. ### Step 4: Project sketch

Create the teardrop-shaped sketch on a supporting plane and project it to the surface along a vector. The upper arc is constrained to the center axis and is simply there as supporting geometry for the next step.

5. ### Step 5: Trim the sheet

Using the teardrop-shaped projection, trim the sheet.

Draw a curve along the X-axis out from the projected arc. This curve defines the height of the teardrop bulge.

6. ### Step 6: Create supporting curves & sketches

1. Use an intersection curve to extract a baseline curve as shown
2. Create another curve (spline) or an arc, tangent to the intersection curve, ending at the line that defines the height of the teardrop bulge

7. ### Step 7: Create tangency driver

1. Use the spline/arc from step 2 of previous step, extrude as shown
2. Create a bridge curve from the top of this extrude over to a point on the teardrop arc

8. ### Step 8: Create surface

Use Studio Surface to create a surface as shown

9. ### Step 9: Mirror surface

Mirror the Studio Surface as shown

10. ### Step 10: Dome surface

Create the dome portion of the teardrop as shown

11. ### Step 11: Create scallop

1. Create a sketch and extrude a sheet
2. Cut the revolve with this sheet to create scallop portion of waskom outer profile

12. ### Step 12: Offset sheets

Offset sheets that form the teardrop shape and inner bowl

13. ### Step 13: Sew sheets

Sew the 3 sheets that form the teardrop

14. ### Step 14: Trim sheets

Trim revolve sheet with sewn sheets from previous step

15. ### Step 15: Extend sheet

Extend inner revolve as shown. Sheet height dependent on desired end shape.

16. ### Step 16: Law Extension

Create a Law Extension as shown

17. ### Step 17: Intersection curves

Use intersection curve to extract a curve from Law Extension sheet and outer sheet as shown.

18. ### Step 18: Bridge curves

Create 3 bridge curves as shown; two at the ends with the same continuity values and one at the center. Values are totally up to you and what you want the final shape of this section to look like.

19. ### Step 19: Studio Surface

Create a studio surface as shown; 3 sections 2 guides

20. ### Step 20: Offset Curve in Face

Offset a curve in face as shown. This will be used for sheet trim in next operation.

As shown

As shown

23. ### Step 23: Sew

Sew all sheets together

24. ### Step 24: Trim

Trim ends using 45º extrude from earlier operation

25. ### Step 25: Pattern rotate

1. Rotate sewn section 8 times
2. Sew all sheets together to form solid body

As shown