BUG: top face of solid disappears when adding fillet to edge

joshtargo
joshtargo Member Posts: 679 EDU
in Community Support

https://cad.onshape.com/documents/d8e5b380208a4751f3388ac2/w/da3086a6bc185b59f4ba43eb/e/38c71f2c0389016332682fd1?renderMode=0&uiState=67d1cb94d213cc6ff48192e8

Any ideas? Legit bug?

2025-03-12 13 58 45.png

Answers

  • S1mon
    S1mon Member Posts: 4,588 PRO

    If you reduce the radius of fillet 6 so that it doesn't spill over the edge of the part (say .2 instead of .25), everything behaves much better.

    image.png

    Simon Gatrall | Product Development, Engineering, Design, Onshape | Ex- IDEO, PCH, Unagi, Carbon | LinkedIn

  • joshtargo
    joshtargo Member Posts: 679 EDU
    https://forum.onshape.com/discussion/comment/115033#Comment_115033

    I was able to fix the part in multiple ways, but the fact still stands that simply trying to add a fillet caused an entire face of a solid to disappear. should I just report this?

  • S1mon
    S1mon Member Posts: 4,588 PRO

    It’s definitely worth reporting, but I suspect it’s a Parasolid bug. Solidworks does similar things when the geometry has a twitchy topology issue like that.

    Simon Gatrall | Product Development, Engineering, Design, Onshape | Ex- IDEO, PCH, Unagi, Carbon | LinkedIn

  • jelte_steur_info
    jelte_steur_info Member Posts: 683 PRO

    I concur: NX (built by siemens, that owns Parasolid kernel) also does this sometimes.

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