Message 1 of 12
... with out using trace/parallel trace which actually works great for this...
is it possible to have a parallel line actually stay parallel with out adding a myriad constraints.
I mean is it something D3 can do?
Does any other software have this?
Alternatively is it possible to make is so all reasonable constraints could automatically be applied ?
e.g. parallel, concentric etc,
Message 2 of 12
I know there has to be more to this question then you are letting on. Parallel constraints can be added automatically or you can force two lines to be parallel by adding "one" parallel constraint. I'm not sure why you mention "a myriad of constraints" unless there is more to this story.
Do you want to attach a part?
Message 3 of 12
Message 4 of 12
I meant to say parallel offset for a chain of curves/profile set. I knew what I meant.
In the attached SS the outside is a fully constrain profile.
The inside is a parallel offset.
I add a small line between the two as a construction for controlling the actual offset dimension.
The Inside profile has no real memory of being an offset of the original profile.
If I want to change the offset value, I have to either redo the offset with a new value or add the constraints manually.
For lines and arcs I see no reason why the parallel off set constraints should not be added automatically or there be an inherent parallel offset relationship. I can understand splines might be more difficult to manage.
With out adding at least a connection line, when you move the profile the offset is left behind.
Parallel trace overcomes this but you cannot edit the offset value, you must rebuild and that is not parametric.
Message 5 of 12
The answer to your question: Does any other software have this? ProE does what you want. We create a lot of offset profiles and in ProE it is very easy.
I submitted the following pcr to do just that back in 2006:
In the attached file Sketch3 contains a curve chain that is just an offset from Sketch1. I want all the constraints from Sketch1 to drive Sketch3. In ProE for this same condition I only need apply the distance and direction of offset. In Vx I do the offset and direction then must apply constraints for the same conditions that exist in Sketch1.
The sketch I refer to is just a simple outline similar to yours.
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Message 10 of 12
Don't forget that some of modeling features like, extrude, revolve and sweep have options for offseting the profile/sketch when modeling. If you can avoid the work in the sketcher the parametrics will be much more reliable.
- Thicken (different 1st and 2nd offset values)
- Thicken Same
Many of you are already aware of these options, but sometimes we get into certain work habits or are influenced by limitations of other software we use and simply forget about some of these slick little tools.
Message 11 of 12
you are correct for modelling.
But here is where sketcher gets used sometimes -by me a lot.
I do all the dimensional relationship figuring out in dynamic all singin'n dancin' sketch/s which have to show as much detail as required to determine just how far/close things can get. So the parallel constraint would be really nice to have.
As would other things like auto dimension! e.g. draw a circle/line etc and it's dimension was there! wow.
Some objects do it - rectangles for instance, but otherwise, it's auto manual! Oops, really another thread altogether...
Message 12 of 12
IMO adding the offset dimension automatically would be a significant enhancement as it is always less effort to delete or toggle type than to add.
Is there s reason the dimension not auto added?
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