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.

  21. Step 21: Trim

    As shown

  22. Step 22: Bridge surface

    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

  26. Step 26: Apply fillets

    As shown