How to create a parallel joint between two faces in Fusion 360?

[AgileJohns1411]

Hi Fellow Designers, 
How to create a parallel joint in Fusion 360 between two faces?  I want to make a parallel joint between face 1 and face 2 as shown in the picture.
Thanks in advance for providing the solution.
Agile

[etfrench]

How do the two faces move relative to each other on X, Y, and Z planes?

[AgileJohns1411]

Thanks for the prompt response, they translate in Z-axis and XY plane should be parallel

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@etfrench wrote:

How do the two faces move relative to each other on X, Y, and Z planes?

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[jhackney1972]

You did not supply your model so I created a simple model of the area you are looking at.  I created a "Joint Origin" between the two faces on the center of the plate but you can use any point to locate it, even a sketch point will work if needed.  I then used another component and matched up two joint origins to show how it is used to get a planar joint. Take a look at the screencast.

[TrippyLighting]

Here is a link to a class recording at Autodesk University that you should be watching before applying anymore joints, because I can see alone by this screenshot that you are not understanding the basic concept of the joint system in Fusions 360.

Joints in Fusion 360 are not geometric mates as in other CAD systems.

[chrisplyler]

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@jhackney1972 wrote:

I then used another component and matched up two joint origins to show how it is used to get a planar joint.   

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If the moving Component only needs to translate in a single direction, a Slider Joint is more appropriate than a Planar Joint.

[AgileJohns1411]

HI jhackney1972,
Thanks a lot for the solution, it was pristine and to the point. I am sorry for not providing the models and will ensure to attach them in future.
Cheers,
Agile

[AgileJohns1411]

Hi Peter,
You are right, i am a novice and will watch those tutorials before getting down to real business. 
Thanks,
Agile

[ben.ruppel]

Joints have been a huge pain point while I am learning the rest of Fusion 360 extremely quickly and your video was the first of 5 to get me on the right track.

(I think that skipping over the demonstration of creating a joint between two faces could make this video easier to absorb.  Maybe.)

I think I have captured the source of the cognitive disconnect:

1) The term "joint" can be thought of as a replacement to "mate" and "mate" can be a verb instead of a noun.  So I click on "joint" and think that I'm about to create a connection, not create a connection point.

2) The dialog box for "join" includes the option to select two things by default.  This reinforces the false assumption that I'm about to perform the act of "joining" something.

3) The motion type is defined in the creation of the joint dialog box.  This reinforces the false assumption that 

Humans figure things out by observing patterns and applying existing known patterns and intuition.  In this case, the "joint" workflow and terminology creates a trap that confuses users of other systems.  

Also, even if I experiment and my joints WILL work, the OK button stays grey so I never know it.  I found out the hard way that if I simply click in an empty spot on the canvas the joint does what I expected.  This caused a huge amount of confusion.  

It doesn't help when you want to do a surface-surface joint (I think a very basic operation) and the official help page involves complex spinning gears but no example for surface-surface.