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How to fill solid of the inside suction cup's bellow?

ismat_jahanismat_jahan Member Posts: 25 ✭
in General
Hello,
I am trying make inside solid-mold of the suction cup's bellow part like the reference. For this I need to fill up the inside of the bellow to get the solid inside-curves.
My plan is after getting the inside curve solid model, 3D print it & use it inside of the silicone mold. I just can't fill the hole accurately to get the inside's solid curves.
How do I do it? Suggestion please, I am struggling on this...

 

Comments

  • Options
    eric_pestyeric_pesty Member Posts: 1,504 PRO
    I think the "enclose" feature should work for this...
    Or you might have to do a "zero offset" surface out of the external faces and cap the open end(s) with the "fill" feature
  • Options
    Evan_ReeseEvan_Reese Member Posts: 2,064 PRO
    Here's one way: https://cad.onshape.com/documents/6a8c57e1984ede436963960c/w/711cd9e35e2ccb6e745f3f68/e/82616a56f77e60981828b474

    Evan Reese / Principal and Industrial Designer with Ovyl
    Website: ovyl.io
  • Options
    mahirmahir Member, Developers Posts: 1,291 ✭✭✭✭✭
    edited May 2022
    One lazy way would be to just model a new block around the bellows, perform a boolean subtract, and then delete the external body to leave the internal volume. It's not necessary the most elegant method, but it requires few selections and is robust to changing geometry. The block would just need to have the same flat top and bottom surfaces as the bellows.

    https://cad.onshape.com/documents/9274ff6f8d6ef85343d41bc3/w/1e2f935958fd3d24ad19de38/e/debefeb8fb0d2e985eb8bee2

  • Options
    S1monS1mon Member Posts: 2,361 PRO
    edited May 2022
    Another quick way:

    Create top and bottom surfaces with Fill (just pick the circular edge). Then Enclose (pick the fill surfaces and the bellows). Then you can Boolean Union. This doesn't require any sketches, and the selections are very simple.


  • Options
    ismat_jahanismat_jahan Member Posts: 25 ✭
    I did the zero offset of the external surface but I can't fill with solid by capping the open ends
  • Options
    ismat_jahanismat_jahan Member Posts: 25 ✭
    Evan_Reese said:
    Here's one way: https://cad.onshape.com/documents/6a8c57e1984ede436963960c/w/711cd9e35e2ccb6e745f3f68/e/82616a56f77e60981828b474
       Thanks a LOT!!!! <3 I'm overwhelmed with joy! <3<3 



  • Options
    eric_pestyeric_pesty Member Posts: 1,504 PRO
    ismat_jahan said:
    I did the zero offset of the external surface but I can't fill with solid by capping the open ends
    The fill can only do one opening at a time, you just need to use 2 separate fill features.
  • Options
    Evan_ReeseEvan_Reese Member Posts: 2,064 PRO
    eric_pesty said:
    ismat_jahan said:
    I did the zero offset of the external surface but I can't fill with solid by capping the open ends
    The fill can only do one opening at a time, you just need to use 2 separate fill features.
    This is the exact kind of thing I wrote that Cap feature for. It just finds open edge loops and does a fill with positional continuity. Nothing groundbreaking but it's convenient.
    Evan Reese / Principal and Industrial Designer with Ovyl
    Website: ovyl.io
  • Options
    ismat_jahanismat_jahan Member Posts: 25 ✭
    S1mon said:
    Another quick way:

    Create top and bottom surfaces with Fill (just pick the circular edge). Then Enclose (pick the fill surfaces and the bellows). Then you can Boolean Union. This doesn't require any sketches, and the selections are very simple.



    It's the most easiest way I found! worked like magic! THANK U.
  • Options
    ismat_jahanismat_jahan Member Posts: 25 ✭
    Evan_Reese said:
    eric_pesty said:
    ismat_jahan said:
    I did the zero offset of the external surface but I can't fill with solid by capping the open ends
    The fill can only do one opening at a time, you just need to use 2 separate fill features.
    This is the exact kind of thing I wrote that Cap feature for. It just finds open edge loops and does a fill with positional continuity. Nothing groundbreaking but it's convenient.

    Yes, the cap feature is new to me! from u I learned this method. Appreciated.
  • Options
    ismat_jahanismat_jahan Member Posts: 25 ✭
    eric_pesty said:
    ismat_jahan said:
    I did the zero offset of the external surface but I can't fill with solid by capping the open ends
    The fill can only do one opening at a time, you just need to use 2 separate fill features.

    Got it!
  • Options
    ismat_jahanismat_jahan Member Posts: 25 ✭
    S1mon said:
    Another quick way:

    Create top and bottom surfaces with Fill (just pick the circular edge). Then Enclose (pick the fill surfaces and the bellows). Then you can Boolean Union. This doesn't require any sketches, and the selections are very simple.




       Thanks a LOT!!!! <3 I'm overwhelmed with joy! <3<3 



  • Options
    ismat_jahanismat_jahan Member Posts: 25 ✭
    mahir said:
    One lazy way would be to just model a new block around the bellows, perform a boolean subtract, and then delete the external body to leave the internal volume. It's not necessary the most elegant method, but it requires few selections and is robust to changing geometry. The block would just need to have the same flat top and bottom surfaces as the bellows.

    https://cad.onshape.com/documents/9274ff6f8d6ef85343d41bc3/w/1e2f935958fd3d24ad19de38/e/debefeb8fb0d2e985eb8bee2

    Thanks a LOT!!!! 3 I'm overwhelmed with joy! 33 


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