Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Master Model method

Master Model method

Master Model method

Can anyone provide feedback as to the advantages of separating the model file from the drawing file?  Does this really improve performance as far as loading components in an assembly?  We currently create our drawings within the model file and we've been throwing around the idea of separating the two.  I'd like to know if their's any other advantages (cost/time savings) associated with doing so?

RE: Master Model method

One major advantage of separating the drawing file from the 3D part file is that one person can create dimensions, and drawings while another person modifies the 3D model.  What you really do is create an assembly, with the 3D object as a part in the drawing file.  Then the assembly gets updated automatically when changes are made to the 3D model.

Some companies do not want their draftsmen to be able to change or modify the original 3D model.  So they give the draftsmen access to just the drawing files.

If you have tons of drawings in the same file as the 3D object, the files get rather large.

Hope this helps.

Grant Wittenborn
Aerospace Engineer

RE: Master Model method

Thanks Grant, But if I can't show some sort of cost advantage to separating the model and drawing, then my company will not even consider changing it's current procedures (I wouldn't either).
I do understand that each separated file would have it's own privledges and ownership, but I don't envision the two being worked on at the same time. In most cases, the model is changed prior to the drawing being updated.

I performed a little test to see if having the drawing and model together would impact downstream users as far as performance.  I created a new tooling file for example, and added the model to the tooling file with just the model showing in the reference set.  I noticed no problems at all, the drawing does not load.

I guess if you start doing this from day one, It would be the way to go, but changing to this method mid-stream doesn't make much sense.

RE: Master Model method

You are absolutely correct.  If you have no "rights" issues with different users, then changing your current process doesn't make much sense.  

You will only get into file size issues if you are creating hundreds of drawings around large assemblies (i.e. an entire airplane and all its components).

My company is going with the separate file system mainly for book keeping purposes.  If someone wants drawing 10002-0056/A, I can go search for that file in my database, and pull up the drawing immediately, rather than have to go find the full 3D model that drawing "might" be in, and find it that way.  You really can't find drawings just by looking at 3D part files without actually opening up the file.

Grant Wittenborn
Aerospace Engineer

RE: Master Model method

Hi,I am a UG beginer.Could you tell me how to seperate the the drawing file from the 3D part file.


RE: Master Model method

We use the Master model method at my company, and from what I understand it is a requirement if you plan to implement or use the Teamcenter/IMAN PDM system. Teamcenter uses different types of dataset objects. UGPART (drawings/specifications) and UGMASTERs (models) are treated differently by the system.

In a "native" UG environment without user restrictions the master model method seems to me to be more complicated, file management-wise.


RE: Master Model method


To create a separate drawing from the model, just create your model in one file and save it. Create a new file for your drawing and bring the first file in as a component.

In NX, if you have drawing templates set up, you can have your model on the screen, grab a template and drag it to the graphics window and UG will open the new file for you, bring in the model as a component and even place the drawing views on your sheet.

"Wildfires are dangerous, hard to control, and economically catastrophic."

Ben Loosli
CAD/CAM System Analyst

RE: Master Model method

The marster modeling are usefull if you are working with big assembly. The the data size are smaller for the workstation.

If you already have a part file with a drawinng, and want to change it to marster modeling (written for UG18)- do so.:

definition.: filename = the solid part where with the drawing

File - New
In the dialog box ”New Part File” tjek out ”Non-Master Part”
chose the filename - and change it to filename_doc
chose the filename

set filename to work part
Part Spicifacition Existing
Specify Part - chose filnavn_doc
Drawing Selection - SHT1 - ok

set filename_doc to work part


Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members! Already a Member? Login


Solutions Brief - Protecting and Rescuing On-Ground Personnel
Keeping our warfighters safe and delivering them a competitive advantage is a key goal of departments of defense around the world. It’s a goal shared by embedded computing manufacturers like Abaco: we never forget who we serve.This case study describes how a major international contractor integrated an Abaco single board computer at the heart of its CAS/CSAR solution. Download Now
Datasheet - Top Enhancements Creo 7.0
PTC's Creo 7.0 has breakthrough innovations in the areas of generative design, real-time simulation, multibody design, additive manufacturing, and more! With Creo 7.0, you will be able to design the most innovative products faster than ever before, keeping you on the cutting edge of product design and ahead of your competition. Download Now

Close Box

Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close