8
How would you make this tray?
(lemmy.world)
Your own 3D parametric modeler.
FreeCAD is an open-source parametric 3D modeler made primarily to design real-life objects of any size. Parametric modeling allows you to easily modify your design by going back into your model history and changing its parameters.
In this case as a loft. Not say that's necessarily the right way to do it, but that's how I'd do it. See my other comment on the matter here.