mate and flush contstraints reversed

[tedbeauchamp]

Inventor 2020, not sure if all updates are applied, I have been working from home for the past three months. This issue just started yesterday. When I try to do a face mate I get a flush face mate. It's like they mate and flush commands are reversed.

Here I have selected the two faces I want to do a mate between. (View #1)
I want these to faces to be mated face to face. If I select the mate selection (left solution) I get the result as shown in view #2. The detail reverses itself and ends up doing a flush mate.

Selecting the Flush mate (right solution ) gives me picture #3 which is what I want, but it's backwards from what it normally is.

I have noticed that for some reason the selection arrow (red) on the second surface selected seems to be facing into the surface, not out of the surface like it is for the first (green) surface.
Is there some settings option that may have gotten changed in my settings?

[JDMather]

440-p-a_aln_4pn is surface bodies.

Stitch into a solid body.

440-p-a_aln_lever_adjust is surface bodies.

Stitch into a solid body (or into two solid bodies).

Also, your true center-to-center distance is 22.5mm, not .886in.

[SBix26]

In addition to what @JDMather wrote, I can also see from the images you included that Inventor is showing you exactly what is happening-- the normal arrows on the faces you have chosen.  The face labeled Surface 1 Selection (blue) has the arrow pointing down, you can just see the tip sticking out; the other face (yellow) has the arrow sticking down into the part-- all you can see is the red X at the base of the arrow.  This tells you immediately that the face on that part is reversed, and that the part is almost certainly not a solid.

---

In some cases, it is very difficult to see the arrows because of surrounding geometry.  Zooming out helps, because the arrows maintain their size relative to the screen, not to the geometry.

---

Sam B
Inventor Pro 2021.1 | Windows 10 Home 2004
LinkedIn

[tedbeauchamp]

So what your telling me is the file I downloaded is not a solid and that's what's causing the issue? I don't think I've ever had that issue occur before.  Your suggestion is to "Stitch" the switch into a solid. I will see if I can do that and see if it fixes the issue.  I wonder though because I'm pretty sure it's also doing this with parts that I modeled and are IPT's.

[JDMather]

---

@tedbeauchamp wrote:

 I'm pretty sure it's also doing this with parts that I modeled and are IPT's.

---

Attach example files here that you modeled that exhibit this issue.

[SteveMDennis]

@tedbeauchamp The guys have it right. We draw the red arrows as "confirmation" of what direction is "out" but a surface doesn't follow those rules like a solid. I have never seen the red arrows be wrong so always use them as confirmation of what you are doing.  We are mating or flushing the "faces" as the definition of Mate and flush (which match the icon buttons).