Skip to main content
P
pmuewi5-Regular Member
5-Regular Member
August 13, 2025
Solved

Creo 11 - Does changing a start part effect existing parts?

  • August 13, 2025
  • 2 replies
  • 1474 views

I have a huge library of existing parts and assemblies that were all created with the same start part and start assembly files. If I make a change to the start part or start assembly templates, will that have any effect on existing parts and assemblies, or will it only be applied to new parts or assemblies created after the template change?

Best answer by BenLoosli

Only new parts and assemblies created with the new templates.

The start part is 'copied' to your new file name when you create a new object.

2 replies

B
23-Emerald III
BenLoosli23-Emerald IIIAnswer
23-Emerald III
August 13, 2025

Only new parts and assemblies created with the new templates.

The start part is 'copied' to your new file name when you create a new object.

    P
    pmuewi5-Regular MemberAuthor
    5-Regular Member
    August 13, 2025

    Thanks!

    Patriot_1776
    Patriot_177622-Sapphire II
    22-Sapphire II
    August 13, 2025

    It WOULD be cool if there was a way to automatically update parts/dwgs using updated start models and dwg templates at the users option.  I suppose that could be done running model check, but it would be cool for people without that optional package to be able to hit "Y" or "N" to update using the latest.

     

    One thing I DID learn (Ouch!), is that if you have library parts that have defined constraints, and you CHANGE them, they very well may (probably will) fail in all the assemblies they're used in, requiring reconstraining them EVERYWHERE.  THAT was a not very pleasant surprise.  So, if you've got a big library of fasteners etc., be VERY careful to make the constraints EXACTLY the way you want them the first time, then leave them alone.

    tbraxton
    22-Sapphire II
    tbraxton22-Sapphire II
    22-Sapphire II
    August 14, 2025

    You raise an important issue if one were to update legacy data sets using new templates/start parts. For each legacy file you should determine all external references before you attempt to use new templates. I would save a backup copy before any changes and then gain a complete understanding of the ramifications of altering the external references as a result of reducing to practice the use of a new start part.

     

    The start part is saved to the model when newly created using a start part so it is self contained within the part or assembly model. There is no external reference to a start part when using a start model to create a new model.

     

    In theory you could copy all features of a legacy model into a new template and it could be automated but I would do a lot of testing before automating something like this. Unless you need new features added to legacy models there are some other tools that can deal with things like adding/deleting layers, parameters and some other data types within existing models.

    Patriot_1776
    Patriot_177622-Sapphire II
    22-Sapphire II
    August 14, 2025

    I can't imagine wanting start parts to have any reference to external geometry, that sounds like an exceedingly bad idea.  I've never even heard of doing something like that.  So, I can't imagine that if you were able to update legacy parts to use the new start parts (for things like layers, relations, parameters, etc.) that it could cause issues.  Like I said, I've read/heard that Modelcheck can be set up to automatically update legacy models to all the latest stuff in the start part.  I think we really need to do that here, since when we do update models/dwgs we have to do it manually.  Yes, we can cut&paste relations and parameters, and do the "extend rules" thing for the layers, but it would be nice to do it automatically.

    Terms & ConditionsAccessibility statement