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3-Newcomer
June 22, 2023
Solved

Help with Drafts.

  • June 22, 2023
  • 2 replies
  • 2472 views

When trying to apply draft on surface styled parts, or can say class A surfaces, Creo is not allowing to apply drafts. What could be the reason. Here I am considering plastic parts which have a wall thickness.

I think, drafts can only be applied on surfaces which have 90 deg relationship to the reference plane or surface which we are considering the parting line.

 

 

 

Best answer by kdirth

Draft does not work on surfaces that are not "flat" in the draft direction.  Class A surfaces are typically curved or warped in both directions and Creo cannot apply draft to a surface that already has a varying slope in the draft direction..

2 replies

kdirth
kdirth21-Topaz IAnswer
21-Topaz I
June 22, 2023

Draft does not work on surfaces that are not "flat" in the draft direction.  Class A surfaces are typically curved or warped in both directions and Creo cannot apply draft to a surface that already has a varying slope in the draft direction..

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3-Newcomer
June 23, 2023

Thanks a lot. That was very helpfull.

tbraxton
22-Sapphire II
June 22, 2023

Using the draft feature function, you can draft any planar surface, cylinder, tabulated cylinder, cone, or ruled surface, except for those that are perpendicular to the pull direction.

 

Many styled surface features are not one of the types listed above, so you are not able to use the draft feature. 

When creating surfaces, you would want to build the draft into the surface features themselves. I would strongly suggest that you define the mold split(s) and reference the required draft pulls when creating any geometry in your model. This is critical on complex geometry that must eject from a mold.

3-Newcomer
June 23, 2023

Lots of thanks. That was really helpfull.