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Symmetrical series in sketch mode

Symmetrical series in sketch mode

It would be good to have symmetrical series (both linear and cicrular) in sketch mode.

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6 Comments
JimmyDoe
Collaborator

Please make it so that when you use the symmetric command, in sketch mode, once you make your two selections and the centreline that the command resets. Because now, once you make two things symmetric, you need to exit the command and then re-select it, if you want to use it again.

Tags (5)
Anonymous
Not applicable

In a recent release of Inventor, I noticed the ability to pattern assemblies and features from the center out was added.  I would like to take that same idea and apply it to the sketch environment.

 

Example:

 

I would like to be able to draw a mounting pattern on a beam and while still in the sketch, pattern from the center out just like I would an assembly or a feature.  Then close the sketch and use the hole command to punch the holes in the beam.

DRoam
Mentor

Why not pattern the Hole feature rather than patterning from within the sketch? Much better practice and more stable.

 

Anonymous
Not applicable
Just found it interesting that it wasn't an option was all.

Thanks for the replay though !

Sent from my iPhone
Anonymous
Not applicable

DRoam -  I meant to ask sooner, but why do you think it is better practice to pattern a hole rather than center marks while in a sketch ?  I pattern from the sketch environment all the time (just not from the center out obviously) and would like to see why you would do it differently.

 

Thanks !

DRoam
Mentor

Hi @Anonymous, no problem, that's a reasonable question.

 

It's always best practice to pattern features rather than creating lots of duplicate sketch entities, whether it's a pattern of a hole or a sketch profile/extrusion. There are several reasons why:

 

  1. A "pattern" created from a pattern of sketch points/profiles won't update if the number of points/profiles increases. You'll have to manually edit the hole/extrusion feature and click to add each hole center/extrusion profile. This is probably the biggest downfall and is reason enough. Losing parametric control is a massive deficiency.
  2. If it's not a true feature pattern, you won't be able to create associated assembly patterns from it like you could an actual feature pattern.
  3. Your sketches will very quickly get cluttered and possibly unstable with lots of geometry in them. Sketches should always be as simple as possible, leaving as much as possible up to actual Part features (i.e. Holes, Fillets, Chamfers... and Patterns).
  4. It's easier to determine design intent by looking at the feature tree and seeing the pattern feature.
  5. Editing a feature pattern straight from the browser is much quicker than editing a Sketch pattern.
  6. Sketch patterns are more likely to flip on you if there's a big enough change in geometry.

Long story short, make your life a lot easier and use feature patterns. Keep your sketches simple and avoid Sketch patterns when at all possible. Smiley Happy

 

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