[double0jimb0]

Author could spend a lot more time learning how to use Autodesk Inventor sketch environment. You can setup sketch dimensions as ‘driven’ and use equations to comply to whatever exterior box dimensions one chooses. His creating assembly from parts and arranging is silly. All parts /solids should come from same master sketch.

And then also how to use Autodesk CAM, you can use sketch geo to set paths, define offsets, etc.