Joints Failing

[Thegreatrandino]

I posted this question a few minutes ago with a bad link.  I could not find the original

When I expand the width the front right corner pulls apart.  Everything else holds. Also there isn't a problem changing the depth.

I edit the base skelton sketch and every thing changes as it should, except the front right corner.  Maybe the sketch front is wrong. IDK, I can't find the problem.

http://a360.co/2E019AB

TIA

Randino

[Anonymous · Accepted solution]

@Thegreatrandino

"....front right corner pulls apart..."

if you mean this

...then it can be corrected. You should constrain this sketch, the vertical line (for example with coincident)

I constrained it and then the result is this

Not a problem with joints, but with unconstrained sketch.

See attached file.

Manfred

PS Constrain sketches! Obviously there is more work for you to do:

depth changed to 38"

And then I changed it to 39"

[laughingcreek]

You've already got the answer, constrain those sketches.  I did a screen cast before seeing this had been answered, so I'll go ahead and post it anyway. 

[Thegreatrandino]

Thanks! So, I really need to pay attention and ensure the sketch is contained by noticing the color of the sketch line.  With that said, when I applied the coincident constraint to the right edge of the Front sketch, the top line remained blue and all the others are black. That's what I want if I want to be able to change the width, correct?

[Thegreatrandino]

Thanks,

I really like seeing how you applied the contraint after you changed the dimension.

I like your display settings.  How did you do it?

Each component a different color

Dimensions appear on the sketch

Randino

[Anonymous]

---

@Thegreatrandino wrote:

 With that said, when I applied the coincident constraint to the right edge of the Front sketch, the top line remained blue and all the others are black. That's what I want if I want to be able to change the width, correct?

---

Yes, this did the job for me. The sketch color coding depends on the "display settings" -> "environment" -> settings. I used "Grey Room", you used "Photo Booth".

See the difference:

If you want to fully constrain the sketch, add a dimension, then all lines are black. In this case it is not necessary, but still a good idea. This way, you avoid an accidental drag-and-change of an unconstrained sketch geometry.

Different colors -> "Inspect" -> "Component Color Cycling Toggle".

Show sketch dimensions -> right click on sketch (in browser) -> "Show dimension"

Adding constraints: @laughingcreek dragged the endpoint to the desired position (see second 18 in screencast) and Fusion then automatically added the constraint. If you want to have more control then click on "coincident" constraint in the sketch palette and then select the two points you want to make coincident (you can also make the vertical line coincident to the point, same result).

Manfred