Simpler way to fully constrain

[michael_ray_neal]

See attached .f3d as well as drawing.  I can fully constrain sketch by adding a dimensions to the right vertical construction line but do I really need this dimension if both vertical construction lines are equally spaced 10mm from the side of the rectangle?  or is there a better way to fully constrain this sketch without needing the second 10mm dimension on the right vertical construction line.  Long story short, I hate having many physical dimension if there is a constraint I can used to get equally placed construction lines. 

[davebYYPCU · Accepted solution]

One more functioned dimension is less clutter than constraining.

The horizontal construction line, with vertical mid points, can be overlayed an existing line if you wish.

Why is the Origin useless in this case?

Origin between the two construction lines would allow for symmetry.

Might help...

[Drewpan · Accepted solution]

Hi,

The two most common ways to reduce constraints and dimensions are symetry and common dimensions.

Symetry is easiest - fully constrain half then mirror it across the symetry line. All of the dimensions and constraints go

with the mirrored section.

Dimensioning can be made easier if you use an "equals" dimension instead of a value. Still just as many constraints

but the equals constraint is a less obvious in your face icon.

Using linear and straight patterns also helps - sketch ONE then after extruding create a pattern of body or feature.

One set of dimensions and constraints but many parts.

I feel your pain with constraints and dimensions but some ya just gotta do.

Cheers

Andrew

[davebYYPCU · Accepted solution]

If you intend to mirror half of the sketch - don’t

draw one side and bounce out to modelling the half object, then mirror.

Sketches will be half the work, and behave twice as good.

can you show me these equal dimensions?

You mean referenced ones?  D19 here and here and there.  I did say that.

Might help….

[Drewpan · Accepted solution]

Hi,

Are you picking on me again Dave? I have a cold ok?

All right, I know you would sketch half then extrude and mirror objects.

I meant the equals constraint and the referenced dimensions.

Cheers

Andrew