Project point to other sketch

[Anonymous]

When I project a point on a new sketch the red point is not concident with the point of the original geometry. Why?

[davebYYPCU]

The original is not on the sketch plane of sketch 2, but the purple point  - is.

Might help....

[g-andresen]

Hi,

Please share the file.

File > export > save as f3d locally  > attach it to the next post.

günther

[Anonymous]

I have created a sample file. In this project, which simulates the creation of an airplane nose, I created several sketches for the sideline, a sketch for the fuselage and several sketches for the lines that separate the nose into different segments. I created the sketches for the segments on top of construction planes but I was unable to align with the side points. I then tried to create the bodies with the surface module, but I managed to do it only for the first segment, considering that for the others the rails have some discontinuity points just where I created the projection on the points of the different sketches. However, I am sending you a drawing attached for your analysis.

Thank You.

[jeff_strater]

@Anonymous - it is not clear at all which sketch in this model has a problem.  If you can be more specific, we can provide more specific help.  But, a couple of facts to keep in mind:

• Project does a projection of the selected item to the active sketch plane.  There is no guarantee that the selected object and its projection will be the same, even for a point.  In fact, it is rarely the case that this is true.
• Project->Intersect will create an intersection between the selected object and the sketch plane.  For instance, if you select a line or other curve, the intersection will be one or more points in the active sketch.  This can be very useful for creating loft rails, which need to precisely intersect the profile curves.
• Project->Include 3D Geometry will just copy the selected item into the active sketch.  This result will NOT be constrained to the active sketch plane.  If you want a point in your sketch that precisely matches a point from another sketch point, this function will do that, but remember that this point is not on the sketch plane.

[davebYYPCU]

The Loft Command is very finicky.

Best results and one time lofting works in Fusion with clean sketching, and transfers of the same point into subsequent sketches.  Use Project > Project, and Project > Intersect  - if not file content will be the same as yours.  

I reviewed your file, being extracted file, has upset the offset planes - understandable.

Origin is not logical.

Your side view is 3 sketches, with a 4th one to come?

of the 4 points in the two rail sketches only one is successfully connected to a previous sketch.

Front corner of the loft is terrible, 

Best practice is to sketch all profiles and then all rails, using the Project Intersect from Profile sketch to rail sketch, Or visa versa, Rails first and Profiles second, with Project > Intersect for connected points, but when careful this can be a flexible process.

Check my timeline, I used points from your sketches in my sketch 1 and 2.

Might help....

[Anonymous]

I simply followed a tutorial and tried to reproduce the instructions step
by step. I repeated the identical procedures outlined several times, but
without obtaining the same result. In particular the creation of the
construction planes I was not able to create them exactly on the point of
the profile because I cannot snap on the point itself. This is the tutorial
I followed: https://www.youtube.com/watch?v=aG9bX2T9o1Y&t=1351s
Thanks for your help.

[davebYYPCU]

The video started halfway along, 

Ok, for the back of the window, he is doing as I suggested, all rails first before a new Profile.  Uses Project > Intersect, and Project > Project, for the parts I have watched.  All doable.

Ok, I watched his video from the begining, up to 9 minutes I agree with everythying he says.  At 9 minutes, he goes off track, and starts making separate sketches, I don't agree with this, for a one piece Loft.  Looks Like he is making the front with at least 4 lofts, and not what I would do.

He is not using the Timeline History, or I can't see his browser or Timeline so not sure of that.  You are using Timeline history, and when you delete the box, it gives the plane errors, He is using boxes to find the plane position, and that is unusual, but it is working for him, but not working for you.

So in effect same as he is doing, but somehow you have not got it exactly right.  You need to see the cursor blue snap box, for this type of work....

Might help....

[Anonymous]

Finally I solved the problem of alignment with the project point. Basically what I did different from the Tutorial, is the creation of a new component in which I created the box body. Then when I needed to create a construction plane exactly on a point in the vertical profile I did nothing but align the box to the point (snap) and create the construction plane. In this way the projection on the new sketch is perfect. Thank you all for taking the time to address my problem.