Inventor 2017 Adding This Constraint Will Over-Constrain This Sketch Error

[cmratzlaff]

kelly.young has edited your subject line for clarity: Sketch constraints.  Strange behavior?  What am I missing?

[leowarren34]

Any reason in particular, have you tried auot constrain?

[kelly.young]

Hello @cmratzlaff I see that you are visiting as a new member to the Inventor Forum.
Welcome to the Autodesk Community!

Thanks for inserting the images and attaching the part. It would be a bit easier to follow if you record a screencast showing what you are experiencing but think I got the idea from the pictures, will forward to development to take look. 

Please select the Accept Solution button if a post solves your issue or answers your question.

[johnsonshiue · Accepted solution]

Hi Guys,

The behavior does not make sense. It looks like a sketch solver bug to me. The interesting thing is that for the last line segment, instead of using colinear, use two point-line coincident constraints and it will work. I will work with the project team to understand the behavior better.

Many thanks!

[kelly.young]

@cmratzlaff After further investigation we have created INVGEN-23588.

Thanks for attaching the file and describing what you are seeing, it was very helpful. 

Please select the Accept Solution button if a post solves your issue or answers your question.

[leowarren34]

Yay, hopefully patched well before IV2020