I have a design that I now need to make a modification and cut out 5mm from the exact middle without changing any other aspects of the design. I can't just resize the design or nothing will fit. I can't seem to figure out how to slice this vertically and make it shorter horizontally.
If you fully constrain the sketch correctly you can just change the overall width and that's it.
Looking at the sketch it looks like you should have just created one half, extruded then mirrored to create the other. Edit looking closer you should sketched a quarter and mirror the extrusion twice. Symmetry constraints should be kept to a minimum in sketches as they seem to use a lot of resources and slow fusion down.
Golden rule with sketching is keep the sketch as simple as possible and mirror and pattern features not sketch entities.
Mark
Mark Hughes
Owner, Hughes Tooling
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Tip 1. Blue lines and white dots should keep you awake at night.
I recommend that beginners create only one line or rectangle at a time and fully define it immediately before proceeding to next line/rectangle...
Back in a minute...
At any time you find yourself duplicating dimensions you are working too hard. Stop and ask questions...
Notice how few dimensions I have...
Notice that all lines are black (fully defined size and position).
Examine the Attached file.
Double click on any dimension(s) in Sketch1 and edit as desired (within reason).
The model should automatically update.
If for some reason the results do not update correctly and you cannot figure out how to fix the issue - post back with additional questions.
(BTW - there is also a way to do what you originally requested - but that isn't really the most efficient technique so I didn't give you that answer.)
Note: When you edit dimensions notice that many of them I divided by 2 (desired total divided by 2) since I only modeled 1 side of quadrant as suggested by @HughesTooling .
