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How do I add threads to a hole.

matthew_piteramatthew_pitera Member, Developers Posts: 4
edited November 2017 in Community Support
Hello,
I'm new to design/OnShape and am looking for some advice. I would like to add some threads for a M3 screw into my design but cannot figure out how to. I reached community project and have found a M3 nut but am having trouble reverse engineering it. Can anyone assist me with this?
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Answers

  • matthew_piteramatthew_pitera Member, Developers Posts: 4
    edited November 2017
    Hey guys, was able to figure this out thanks to YouTube. I've noticed that this had a few view and wanted to share my solution. Aside from the guy talking a little fast, the video was very informative. Between this video and multiple planes, I was able to complete my task. Hope this helps someone else. 

    https://www.youtube.com/watch?v=OAuh_gQofJA
  • owen_sparksowen_sparks Member, Developers Posts: 2,660 PRO
    edited November 2017
    Wow, hands up, who down voted @matthew_pitera 's question?  That was a bit harsh!

    Owen S,
    Business Systems and Configuration Controller
    HWM-Water Ltd
  • matthew_piteramatthew_pitera Member, Developers Posts: 4
    Hi all.

    This is a popular topic and often forms "one of the first things I must try in CAD". 

    In all honesty the initial thought you should ask yourself is "do I need to model this thread?"

    This is because they are needy little sods from a performance point of view.  They can be time consuming to model but more importantly they can contain more work for the CAD SW to perform every time it rebuilds than all of your other parts combined.  (Just think how many faces you have if your assembly has 50 bolts in it, and 50 tapped holes for them to fit into.)

    From an engineering point of view we want a drawing with a call out to the thread type, which the "hole feature" covers well.  Then our CNC machine has a pilot hole only on the model, the last thing it wants is modeled threads.

    If you really really need threads (say for a rendering of finished product, or for 3d printing) then a good tip is to build them but then suppress the feature when you're working on the rest of the model. 

    Even in 3D printing placing a captive metal nut in the model (and then pausing mid print to drop it in) is usually a better option.

    Just my 2p's worth :)

    Cheers,
    Owen S.
    Thanks for the reply. The project I am working on is for 3D printing and I am trying to keep it 100% 3d printing. While placing a real nut in the print would strengthen it, it does not meet my guidelines. I did take you advice to hide/suppress the threads after creating them. I did notice a little bit more rendering/loading while modifying with the threads on. 
  • matthew_piteramatthew_pitera Member, Developers Posts: 4
    Wow, hands up, who down voted @matthew_pitera 's question?  Thant was a bit harsh!

    Owen S,
    Someone who doesn't like new people :(

    No harm done.
  • ilya_baranilya_baran Onshape Employees, Developers, HDM Posts: 1,170
    Ilya Baran \ VP, Architecture and FeatureScript \ Onshape Inc
  • michael3424michael3424 Member Posts: 673 ✭✭✭✭

    Someone who doesn't like new people :(

    No harm done.
    That's a much better attitude than your down voter has.  One of the best ways to learn is to ask questions.
  • philip_thomasphilip_thomas Member, Moderator, Onshape Employees, Developers Posts: 1,381
    edited November 2017
    @owen_sparks - thank you for channeling your inner-Philip while I was on a plane - please keep it up :)

    Threads for aesthetics = NO
    Functional threads for 3D Printing = ok, but then suppress them. 
    Learning how to make threads = Fun and learning - but please do not use them in any number in an assembly or in any Part Studio with any others parts. 

    This is not a limitation of Onshape, you could cut and paste this into the forum of ANY parametric Cad system.  

    Have fun and listen to Owen :)
    Philip Thomas - Onshape
  • owen_sparksowen_sparks Member, Developers Posts: 2,660 PRO
    Thanks @philip_thomas, figured it was my turn anyway.  ;)

    Fun airplane or commuting airplane?

    I'll have to think of more Philipisms to adopt....

    Owen S.

    Business Systems and Configuration Controller
    HWM-Water Ltd
  • 3dcad3dcad Member, OS Professional, Mentor Posts: 2,470 PRO
    @owen_sparks
    Few tips for getting deeper into Philipisms:
    - Shorter answers, go straight to the point.
    - Use funny image if possible, it's worth thousand words.
    - Short lists are much more efficient than long paragraphs
    - Always remember to encourage for cadding and having fun in the last line.

    =)=);)

    I still think that if cad can't handle threads, it's not users fault. Cad should have automated performance load recognizion and auto-simplify stuff that slows it down and calculate more details when zooming in / computer has time to perform. Similar to keyshot rendering, when you move model it's very crispy but when you let it stand for a moment it's like a photo.
    But I do agree that no one should spend time modeling threads, they should be auto-modeled with hole tool for aesthetic purposes :D

    ps. I just realized there could be a philip-bot integrated into Onshape UI to keep designers in right track ;)
    //rami
  • philip_thomasphilip_thomas Member, Moderator, Onshape Employees, Developers Posts: 1,381
    Rami - We agree with you - it's not the users fault - we are looking at ways of having the CAD just do whats right!
    (and thinking about aesthetic thread representation :)
    Philip Thomas - Onshape
  • 3dcad3dcad Member, OS Professional, Mentor Posts: 2,470 PRO
    We need thumbs up icon into smilies.

    //rami
  • Jake_RosenfeldJake_Rosenfeld Moderator, Onshape Employees, Developers Posts: 1,646
    edited November 2017
    :+1:

    (type : +1 : but without the spaces)
    Jake Rosenfeld - Modeling Team
  • philip_thomasphilip_thomas Member, Moderator, Onshape Employees, Developers Posts: 1,381
    @owen_sparks @3dcad

    Owen / Rami - what if we started using this? :)



    Philip Thomas - Onshape
  • lemon1324lemon1324 Member, Developers Posts: 223 EDU
    @philip_thomas

    I believe you meant to say:

    Arul Suresh
    PhD, Mechanical Engineering, Stanford University
  • owen_sparksowen_sparks Member, Developers Posts: 2,660 PRO
    edited November 2017
    @Jake_Rosenfeld That's very good.  Are there others we should know about?
    I feel this should be included:-
     
    @philip_thomas That's awesome, many up votes to you sir.  Read it at 4 this morning and thought "how did he justify the text like that" followed by doh, less typing, yay.

    @lemon1324
    Interesting, what is that?

    Owen S.
    Business Systems and Configuration Controller
    HWM-Water Ltd
  • owen_sparksowen_sparks Member, Developers Posts: 2,660 PRO
    3dcad said:
    Few tips for getting deeper into Philipisms:
    - Shorter answers, go straight to the point.
    - Use funny image if possible, it's worth thousand words.
    - Short lists are much more efficient than long paragraphs
    - Always remember to encourage for cadding and having fun in the last line.
    It's only funny if it's based on truth, and that's perfect. :+1:

    3dcad said:
    ps. I just realized there could be a philip-bot integrated into Onshape UI to keep designers in right track ;)
    It's funny you should say that.  I proposed a help avatar (almost entirely unlike the Microsoft office paperclip) to be made up of a composite of the features of the OS employees.  I can't image why but it didn't get taken up. 

    In other news I'm still not entirely convinced Ilya is real.  I have a sneaking suspicion he's a genius level AI that escaped from a cold war supercomputer and has sought refuge in an Amazon server farm...

    Hmm, might be time to get a carbon monoxide detector in this office.
    Owen S.
    Business Systems and Configuration Controller
    HWM-Water Ltd
  • philip_thomasphilip_thomas Member, Moderator, Onshape Employees, Developers Posts: 1,381
    @ilya_baran - the gig is up - looks like you failed Owens Turin test. :)
    Philip Thomas - Onshape
  • ilya_baranilya_baran Onshape Employees, Developers, HDM Posts: 1,170
    @owen_sparks
    I am a real person -- I feel it with every byte of my body.
    Ilya Baran \ VP, Architecture and FeatureScript \ Onshape Inc
  • 3dcad3dcad Member, OS Professional, Mentor Posts: 2,470 PRO
    :joy:
    //rami
  • 3dcad3dcad Member, OS Professional, Mentor Posts: 2,470 PRO
    @Jake_Rosenfeld That's very good.  Are there others we should know about?
    ..
    Not all but most of them, write : and any letter to see available options


    Now, print this and put it on top of your work papers to produce better material into forums :warning:
    //rami
  • owen_sparksowen_sparks Member, Developers Posts: 2,660 PRO
    edited November 2017
    3dcad said:
    @Jake_Rosenfeld That's very good.  Are there others we should know about?
    ..
    Not all but most of them, write : and any letter to see available options


    Now, print this and put it on top of your work papers to produce better material into forums :warning:
    Awesome, Thanks @3dcad

    So:-
    Monitor 1 = Partstudio
    Monitor 2 = Assembly
    Monitor 3 = Forum
    Monitor 4 = Drawings Emoji List

    Perfect, thanks :+1:

    Owen S.



    Business Systems and Configuration Controller
    HWM-Water Ltd
  • owen_sparksowen_sparks Member, Developers Posts: 2,660 PRO
    edited November 2017
    Hi folks.

    Thanks to @lougallo pointing out we can reveal a facet count (control D) it's time to put some numbers to the theory.

    This is a 25mm thick disk with twelve threaded holes.  Threads are M12x1.5

    Without threads = 8.2K Triangles:-



    With threads = 942K Triangles:-



    So I've made my model 113.6435 times more complicated by adding 12 sexy looking but mostly pointless threads.  Now imagine there are 200 of them, oh and 200 bolts to go with them...

    Owen S.

    Business Systems and Configuration Controller
    HWM-Water Ltd
  • scott_willis165scott_willis165 Member Posts: 9 ✭✭
    I wonder whether something could be done using textures?
  • Ste_WilsonSte_Wilson Member Posts: 195 EDU
    edited June 2023
    I sometimes just drop a helix in so I have a cosmetic reminder in the model that a hole or shaft is threaded.
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