Parametric size changes move location of parts

[sleitman]

Hello,

I am trying to make an acrylic box whose dimensions can be changed using changes in parameters.  I have tried to change the size of sketch elements, bodies, and components.  The size changes just fine but the location of the parts moves around so instead of a box, I have 5 random bodies in space.  I have tried to make all of the items a rigid group, I have tried various joints, grounds and pins.  

I have done a great amount of searching for answers to my problem online.  I have watched multiple videos.  I feel that I must be missing some fundamental concept in Fusion and would love a pointer for what I should look up to sort out my obvious misunderstanding.

Thank you in advance for any help,

Sasha

[TheCADWhisperer]

There are two different techniques that you can use to achieve reliable and predictable behavior.

Can you File>Export your *.f3d file to your local drive and then Attach it here to a Reply?

[sleitman]

Thanks, I am attaching a simplified file so that I can learn from your suggestions.  

Thank you so much for your help.

Sasha

[sleitman · Accepted solution]

It appears that I accidentally posted this question twice.  The answer can be found here:

https://forums.autodesk.com/t5/fusion-360-support/changes-in-parameter-values-move-componenent-locat...

Solution:

The part that I was missing was constraints.  After watching that forum answer video, I found this tutorial which was also helpful:

https://help.autodesk.com/view/fusion360/ENU/courses/AP-SKETCH-BASICS