Surface modelling a mouse in Solidworks


When you want to model a mouse in Solidworks, e.g. HP X3000 or similar, there is no easy way to do it. You'll need to create several individual surfaces that are trimmed and filleted into the final shape.
It is not a linear process because many of the input splines are qualified guesswork, that needs to be revised/reshaped to achieve the wanted result. It is more art than engineering...!

  1. Step 1: Top Surface, Sketches

    Two perpendicular splines are used for a boundary surface.

  2. Step 2: Top Surface

    Notice that the surface is overbuilt = larger than the actual mouse, so that it can be trimmed to size later.

  3. Step 3: Trim Top Surface

    The top surface has a flat profile seen from the front, so the top surface is trimmed by a horizontal line on the front plane.

  4. Step 4: Front Face, Sketch

    A spline on the right plane is used together with the newly cut edge for a boundary surface.

  5. Step 5: Front Face

  6. Step 6: Side/End face, Sketches

    This intricate face goes from convex to concave to convex in order to provide a comfortable grip. The 3 side profile sketches connect to the sweep profile on the top plane.

  7. Step 7: Side/End Face

  8. Step 8: Trim

    Superfluous faces are removed using a Mutual Trim.

  9. Step 9: Result of Trim

    The trimmed surfaces are automatically knitted by the Mutual Trim command.

  10. Step 10: Bottom Face

    A planar surface on the Top Plane is used to close the bottom.

  11. Step 11: Mutual Trim Result

  12. Step 12: Fillet, front corner

  13. Step 13: Variable Fillet

  14. Step 14: Mirroring and Knitting

  15. Step 15: Fillet, bottom

  16. Step 16: Thicken to Solid

    This is the litmus test to verify that the surface is watertight (without holes).

  17. Step 17: View from below

  18. Step 18: View from side

  19. Step 19: Bottom View

    The next steps in detailing would be to split the mouse into several solid bodies represinting the buttons, battery cover, etc.


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    tumi Yves

    its was splendid.

    April 15th, 2019 19:02
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    Steen Winther

    @OFF Explosion. No, not really. The front face is pretty simple, it only fails if the sketch endpoint doesn't touch the front edge or if the front edge consists of more than one edge (in which case the previous step have had an issue). Maybe she didn't use both directions for the Boundary Surface? She can upload the model to GrabCAD and we can have a look.

    April 2nd, 2019 19:39
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    OFF Explosion

    Just knew that my friend (who I showed the tutorial) couldn´t finished her´s because she couldn´t make the Front face. Any ideas on what she did wrong? Mine worked fine, so I don´t know why her´s didn´t.

    April 2nd, 2019 14:35
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    Steen Winther

    Thanks FredSWUG! I used ordinary circular fillets...!

    March 31st, 2019 19:50
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    Looks good. Did you use circular fillets, or conic fillets for steps 12 & 13?

    March 31st, 2019 13:14