• Welcome to Dental Lab Network
    1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

    Exocad coping design

    Discussion in 'Dental-CAD' started by Leejh, Nov 13, 2017.

    1. Leejh

      Leejh New Member Full Member

      Joined:
      Dec 2016
      Messages:
      18
      Likes Received:
      2
      When I design a coping in exocad, is there a way to save the shrinked part as STL file so I can mill or print that part?
       
    2. Leejh

      Leejh New Member Full Member

      Joined:
      Dec 2016
      Messages:
      18
      Likes Received:
      2
    3. JMN
      Curious

      JMN Christian Member Full Member

      Joined:
      Sep 2012
      Messages:
      6,173
      Likes Received:
      1,281
      Location:
      In a surprisingly solid sea of electrons
      Ok. So here's what happens.

      You design what you want. Exactly.

      Then when it is time to fabricate the thing you designed, the material files come into play with the CAM engine.

      This is what the shrink at sinter ratio is about. It is a 3 dimensional shrink, not just from the outside or inside. The "everything" gets smaller. Sidewalls get thinner, occlusal height reduces, distance between the interior of the sidewalls reduces, etc.

      If you export to mill wax, mill pmma, print various plastics, etc they will alll have different settings, and will be made to be as they will stay after milling. They will be made to be exactly what you designed after any finishing process (like curing some printed materials) is properly carried out.

      The equipment is 'smart enough' to know what to do after you set, or get your reseller or outsourcing house to set, the parameters for the material in which you are producing the design AND for the machinery which will produce the design.

      So if you already know how to export the stl, you know how to export the stl. It isn't until you tell the systems what you are making the design out of that you need to be concerned with sintering-shrink, wax or pmma melt from too much dwell time, friction and tool speed or any other thing aside from just doing the design as you want the outcome.

      Did that explain it well enough for you? If not, It's more me than you and someone smarter can chime in and correct my mis-characterizations and over-simplifications.
       
      • Informative Informative x 1
    4. user name
      Question

      user name Well-Known Member Full Member

      Joined:
      May 2010
      Messages:
      4,584
      Likes Received:
      1,238
      @JMN Shes wondering about reduction, not shrinkage.
      (Im assuming its a she because you didn't understand :rolleyes:)

      I assume you just want to do a split file so you can do a Zr coping and mill the wax to press over?

      Answer...split file.
       
      • Like Like x 1
      • Agree Agree x 1
    5. user name
      Question

      user name Well-Known Member Full Member

      Joined:
      May 2010
      Messages:
      4,584
      Likes Received:
      1,238
      @Leejh In DB, when youre fill out the work form and select the type of restorations, choose 'pressed crown'. You will then be able to choose your coping material and the press over material, and all applicable parameters. When the case is all designed and you go to your CAM, your nc files will all be there ready to pick from.
       
      • Like Like x 1
      • Informative Informative x 1
    6. JMN
      Curious

      JMN Christian Member Full Member

      Joined:
      Sep 2012
      Messages:
      6,173
      Likes Received:
      1,281
      Location:
      In a surprisingly solid sea of electrons
      That would do it.
       
      • Funny Funny x 1
    7. JMN
      Curious

      JMN Christian Member Full Member

      Joined:
      Sep 2012
      Messages:
      6,173
      Likes Received:
      1,281
      Location:
      In a surprisingly solid sea of electrons
      @Ralph32 I welcome disagreement, it usually means a chance to learn.
      But could you at least say what you disagree with, please.
       
      • Like Like x 1
    8. Sda36

      Sda36 Active Member Full Member

      Joined:
      Jul 2016
      Messages:
      254
      Likes Received:
      64
      Hi , if you choose coping in your order page you have many options on reduction. For example you can select all surface s (turns blue): All

      -- and exemptall

      You can then use your mouse to subtract or add to cutback area. You can also modify the entire cutback in the following screen, just be careful of tool selected and strength. (Add+-remove, Smoothen)

      Please note that add/ remove trys to copy existing morphological points and smooth does not.

      Sent from my LG-H873 using Tapatalk
       
      • Informative Informative x 1
    9. user name
      Question

      user name Well-Known Member Full Member

      Joined:
      May 2010
      Messages:
      4,584
      Likes Received:
      1,238
      Just let it go JMN. Hes probably eating paste and sticking crayons in his nose.
       
      • Funny Funny x 3
    10. user name
      Question

      user name Well-Known Member Full Member

      Joined:
      May 2010
      Messages:
      4,584
      Likes Received:
      1,238
      In defense of Ralph though, you did kinda sound like the Turbo Encabulator guy. :cool:
       
      • Funny Funny x 1
    11. JMN
      Curious

      JMN Christian Member Full Member

      Joined:
      Sep 2012
      Messages:
      6,173
      Likes Received:
      1,281
      Location:
      In a surprisingly solid sea of electrons
      Hadn't run across that one before. Couldn't take more that 40 seconds. aaaiiieeee!
      And I wonder why tele-marketers hang up on me. :Call:
       
      • Funny Funny x 1
    12. user name
      Question

      user name Well-Known Member Full Member

      Joined:
      May 2010
      Messages:
      4,584
      Likes Received:
      1,238
      @Ralph32

      I know youre watching. Thanks for being a good sport. Consider this a formal invitation to join the party. I know you have stuff to share, so get on it!
       
      • Like Like x 1
    13. 2thm8kr
      Devilish

      2thm8kr Beanosavedmysociallife Full Member

      Joined:
      Dec 2009
      Messages:
      8,686
      Likes Received:
      2,274
      Location:
      Suburbs of Hades
      Before you click to shrink the coping save the design as stl. When given the option select 'save in original alignment'.
      This will save the design in the same coordinates as the case. You could import it in later as waxup and make it fit intimately
      to your coping after milling and finishing down.

      I'm guessing Ralph32 fat fingered the dislike.
       
      • Like Like x 1
      • Agree Agree x 1
      • Funny Funny x 1
    14. rkm rdt
      Artistic

      rkm rdt Well-Known Member Donator Full Member

      Joined:
      Nov 2007
      Messages:
      14,044
      Likes Received:
      2,791
      Location:
      Ottawa, Canada
      So you calling Ralph fat?
       
      • Funny Funny x 1
    15. 2thm8kr
      Devilish

      2thm8kr Beanosavedmysociallife Full Member

      Joined:
      Dec 2009
      Messages:
      8,686
      Likes Received:
      2,274
      Location:
      Suburbs of Hades
      Yes, you got a problem with that?
       
      • Funny Funny x 1

    Share This Page