Reuse projected lines in sketch or create overlapping lines

[mukhopadhyaysayak]

Looking for some tips and general best practices when using projected lines in my sketch from another sketch. Many times, my sketch will depend on another sketch and the previous sketch might already have lines that I can reuse. At that point I have 2 options.

1. I can project the line in question, convert it to a construction line, and draw my own line over it.
2. Project the line in question and then just use it my sketch along with other drawn lines.

As an example, in the below screenshot, I am creating a sketch in the corner and am reusing the projected lines completely. Is this a good idea?

[jhackney1972]

With method 2, if the lines were projected with "Projection Link" on, the sketch will update if the sketch they were projected from happens to change.  This may or may not be what you desire.  It is a practice you have control both ways and is an accepted method of sketching.

With method 1, it is a lot of work for nothing as all you have to do is turn off the "Projection Link" and you sketch can be reused as an independent sketch either as a construction line or sketch line.  You did not say if you how you projected the first sketch nor did you say how you constrained your construction lines to the projected sketch.

[g-andresen]

Hi,

1. In this case I would use variant 2.
2. occasionally I only project points where the new sketch is created.

Günther

[mukhopadhyaysayak]

I do all my projections with link turned on as I do want my projections to be updated. I have a training background in CATIA and I am doing modelling after a gap of 8 years so some of the methodology is jarring to me. For eg, in CATIA iirc, projections are never a part of the sketch unless lines are redrawn.

[mukhopadhyaysayak]

I have thought about creating lines that are constrained to projected points instead of projecting lines from the base sketch. Still, my goal is to have robust sketches. Is there any difference in the robustness of a line projection vs a point projection, when a sketch is projected, not a body?

[davebYYPCU]

Linked Projected articles are so robust the You can’t edit them, you have to edit the source.

Say the line projected is not going to be long enough in the destination sketch, that’s when I would Project the good end point, and snap the required line to it, rather than have 2 coliniar lines.

It comes to personal preference using the software as it works.

Might help....