Parametric model mirroring fixed sketch geomety

[letterle]

Hi There, 

https://a360.co/2wjGPuB 

I've been working on the included model. The concept is to create a parametric model that enables me to create various sized objects of N-segments in length, width and height with a variable spacing. 

The sketch geometry looks constrained but every time I change the number of segments. The sketch mirrors some elements/holes/slots causing the model to fail. I've noticed similar mirroring behavior in other models. 

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Maybe unrelated but fusion regularly crashes when it has to recalculate these models.

[laughingcreek]

Your troubles begin well before the mirror feature.  While you can create a parametric model like this, you can't get there with the approach your taking.   It looks like some of the extrude profiles rely on geometry from other components.  When you change the parameters, fusion isn't able to keep track of the these, and it's losing it's reference.

My suggestion-

-finish your  model as your doing,but forget about the parametric aspect. 

-make a new model with a Top down approach.  Use your original as an example to figure out locations of, and the parametric  relationships between, the features. (all the notches, extrudes etc.).  All the components in your new model should stand alone, and not rely on other components for where features are. 

[TrippyLighting]

I'd add to @laughingcreek's reply that you need to test if user parameters for as intense while you are developing this. It would seem that you built the entire model before actually testing whether changes to the user parameters actually result  in the desired changes.

[letterle]

@laughingcreek and @TrippyLighting

Thank you for your response. Realy appreciate it. I've rebuilt the model using the starting origin as the only reference point for as long as possible. Ultimately cutting down on the referenced geometry.

In addition, I've noticed that avoiding mirrors and tangents in the sketch helps as well. Unfortunately, this does not resolve the whole issue. 

For now, it's good enough!

Thanks again!!!!