Greetings !

What is the best practice to easily reassemble two parts originally designed to go together ?

This is the kind of trivial and obvious detail about SW that i should know by know !

I made this small set of steps to explain my question:

1: This is the desired result in assembly.

Note: that this picture is rendered form the base part file and not from an assembly.

2: This shows the start of the design process.

3: This is the spitting step using a simple surface.

4: I wand to add another eventual "mate" difficulty by having the cap slightly thinner.

5: The basic part is complete... now we save both bodies in seperated part files.

6: In a new assembly, we add the two parts (i.e. Cap and bowl) and our challenge is to mate/position them together. (HOW ?)

The 4 files involved in this demonstration are attached.

Thanks for any help.