Changing dimensions for a mirrored object

[andrewhoodless]

Hi Guys (and gals),

I have small problem here. I have mirrored quite a bit of my pattern. However I'd like to bring the top half and bottom half closer together so the two 18mm radii in the middle can be made smaller. i.e a bit tighter to the other radii I have used.

Can't seem to get the 2 halves to come together in a decent way. Maybe it is just a dimensional thing ?

[lichtzeichenanlage]

I can't answer the question right now, because my notebook is busy and Fusion 360 is slow. Another reason why F360 is slow right now is because you've put way to much stuff in your sketch.

Distance of your mirrored objects are managed by defining dimensions. And sketches should be fully defined anyway. 

But what you really should do is redo it. Rule of thumb is that you should use features over sketches if possible. And in your case it's truly possible most of the time.

Sketch the outside of your door, extrude it, sketch a cutout, extrude cut your cutout, mirror and / or pattern your cutout (faces or features if possible) and so on. This will give you or more robust and flexible design.

[etfrench]

You need to move the upper part 4.761884 mm in order to have a 3mm fillet on the mirror line:

Follow @lichtzeichenanlage suggestions for a better way to model this.

[TrippyLighting]

Try to avoid patterning and mirroring in a sketch and mirror timeline features. In this case there is no mirroring or pattering need in the sketch.

You definitely don't want to apply fillets in a sketch if not absolutely necessary.

Also, you may wan to familiarize yourself with Fusion 360 R.U.L.E #1

[TrippyLighting · Accepted solution]

In essence here's your object:

This is all the sketch you need:

Here's what you did:

.f3d is attached. Much faster to sketch, much faster performance, much more stable.

[andrewhoodless]

Thanks Trippy Lighting. Mine looks very complicated, however due to the mirroring in the sketch all the constraints were added automatically. I'll read your tips and try to do mirroring in the model as you did. Thanks for the support.

[etfrench]

You'll still need to adjust the pattern by 4.761884 mm in order to have 3 mm fillets on the center feature.  That is assuming you want that feature precisely centered.  Usually this type of pattern will be offset above the centerline.

[lichtzeichenanlage]

@TrippyLighting: Okay - that's better than my simple sketch, extrude, sketch on surface, cut extrude, pattern / mirror faces etc. But hey - it also looks like done by a very experienced designer. So - how did it 😉