Can't subtract on certain parts

zach_morris
zach_morris Member Posts: 26 ✭✭
in Community Support
I designed this cap for a repair I'm making, but I'm unable to subtract 4 of my 6 screw holes to bring the height down. It seems that the only differences is that the two that worked are adjoined to 2 walls as opposed to just 1. I've already spent way too long getting it to this point, but I figure it's just one of those things that someone could point out super quick. I appreciate any help!

https://cad.onshape.com/documents/4aae0cd50e6cef7caf64ce3c/w/4928d5fc75b044f54c0212c3/e/ee75c0f375d993ecff2f09ce
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Best Answers

  • eric_pesty
    eric_pesty Member, pcbaevp Posts: 2,929 PRO
    Answer ✓
    Not sure exactly what the issue is, I'm guessing you wanted to add some more faces to "extrude7"?
    Unless I am missing something, I think you should be able to use the "second end position" option on extrude4 to bring the top face down where you want it (instead of using a separate extrude).
  • steve_shubin
    steve_shubin Member Posts: 1,118 ✭✭✭✭
    edited May 2022 Answer ✓
    @zach_morris

    @eric_pesty

    Eric is right. That’s all you had to do

    In the document I posted up above, go look in Part Studio 3 for Eric‘s solution

    Zach, as to why you weren’t able to do it the way you thought it should work, is because most likely, Sketch 1 one was getting in the way of you selecting the faces of the part. And there also had to be a split made to make it work the way you were talking about doing it Zack

    But Eric is right. The best way to do it was do a second end position extrusion on Extrusion 4

Answers

  • steve_shubin
    steve_shubin Member Posts: 1,118 ✭✭✭✭
    edited May 2022
    @zach_morris

    Is this what you are looking for ?

    take a look at Part Studio 2

    https://cad.onshape.com/documents/542f2153c43896147b4c97ce/w/f18dde24886194c04f0a7ad2/e/1c7518a09973b4d842ca6d61

  • eric_pesty
    eric_pesty Member, pcbaevp Posts: 2,929 PRO
    Answer ✓
    Not sure exactly what the issue is, I'm guessing you wanted to add some more faces to "extrude7"?
    Unless I am missing something, I think you should be able to use the "second end position" option on extrude4 to bring the top face down where you want it (instead of using a separate extrude).
  • steve_shubin
    steve_shubin Member Posts: 1,118 ✭✭✭✭
    edited May 2022 Answer ✓
    @zach_morris

    @eric_pesty

    Eric is right. That’s all you had to do

    In the document I posted up above, go look in Part Studio 3 for Eric‘s solution

    Zach, as to why you weren’t able to do it the way you thought it should work, is because most likely, Sketch 1 one was getting in the way of you selecting the faces of the part. And there also had to be a split made to make it work the way you were talking about doing it Zack

    But Eric is right. The best way to do it was do a second end position extrusion on Extrusion 4

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