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loft problem error

Discussion in 'Using Alibre Design' started by dlaery, May 30, 2019.

  1. dlaery

    dlaery Senior Member

    I don't know what this error/status means other than "won't work"
    I would like to be able to make this loft work if possible.
    any suggestions?
    I have MOI but it's a little harder to control dimensions.
     

    Attached Files:

  2. dlaery

    dlaery Senior Member

    well i have moved my sketch and have got it to work.
     
  3. JST

    JST Alibre Super User

    What? Just ONE loft problem?

    I think there are dozens....... and they are often solved by stuff that should not even make a difference.
     
    MKR likes this.
  4. dlaery

    dlaery Senior Member

    Yeah, I usually have a lot of trouble with lofts, i thought it was just me
     
  5. OTE_TheMissile

    OTE_TheMissile Alibre Super User

    I love doing Lofts. It's like gambling every time I regenerate the model: is it going to succeed and allow me to continue working, or will it blow up & set me back 45min of screwing around trying to make it operable before I give up and leave it at "close enough"?

    You never know, THAT'S HALF THE FUN! :D
     
    MKR likes this.
  6. dlaery

    dlaery Senior Member

    how do I "snap" to an end point? these are splines.
     

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  7. DavidJ

    DavidJ Alibre Super User

    Assuming the item you want to constrain to is in another sketch, you need to add a 3D Point to that other sketch. 3D points are visible and accessible from outside of the sketch they were defined in - so for example are perfect for ensuring that a guide curve actually coincides with a profile sketch.
     
  8. dlaery

    dlaery Senior Member

    well I haven't found a 3d point yet. the 2 lines is in the same sketch. the one line is a project to sketch line from 1 of the sketches that will be used in the loft.
     
  9. dlaery

    dlaery Senior Member

    usually the project to sketch works for me but not this time.
     
  10. dlaery

    dlaery Senior Member

    i'm in 3d sketch and still can't get it to snap to an end point.
     
  11. dlaery

    dlaery Senior Member

    i am trying to attach sketch 15 to sketch 16.
     

    Attached Files:

  12. idslk

    idslk Senior Member

    upload_2019-6-12_23-29-43.png

    Hm, looks interesting

    should it look so?
     
  13. dlaery

    dlaery Senior Member

    I had it to work but I had to modify it and now I can't get it to work the same way I did before. I am having trouble with getting the guide cures attached to my sketches for the loft
    here is a pic of what I have been using to draw from. This would be nice to be able to put pics like this in Alibre Part Hint Hint.;);)
     

    Attached Files:

  14. idslk

    idslk Senior Member

    Hello Dleary,

    drag the bone above sketch<15>
    insert an axis with plane<15> an XY-Plane
    Edit sketch<15>
    project to sketch axis<16> as reference geometrie (i use "Maintain association to source entity" too)
    insert 2D point at crossing of your sketch and the projected axis
    upload_2019-6-13_0-10-34.png
    Now insert a 3D-point using the 2D point
    upload_2019-6-13_0-10-54.png
    leave sketch<15>
    edit sketch<1>
    insert 2D point at crossing of your sketch and the projected axis
    Now insert a 3D-point using the 2D point
    upload_2019-6-13_0-11-15.png
    leave sketch<1>
    edit sketch<16>
    delete green marked part of your spline
    upload_2019-6-13_0-12-34.png
    project 3D point<17> to sketch as reference geometrie
    upload_2019-6-13_0-13-22.png
    snap spline end point to 3D point
    project 3D point<18> to sketch as reference geometrie
    snap spline end point to 3D point
    create loft with sketch<1> and sketch<15> with guide curve sketch<16>

    Regards
    Stefan
     
  15. dlaery

    dlaery Senior Member

    now I'm stuck on
    "Now insert a 3D-point using the 2D point"
    do i do this in 2D sketch or 3D Sketch?
     

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  16. DavidJ

    DavidJ Alibre Super User

    2D sketch, from menu bar - Sketch -> Insert -> Point

    Typically you place the Point on a Node - the Point has the advantage of being visible outside the 2D sketch and can be constrained to.
     
  17. dlaery

    dlaery Senior Member

    ok, i'm making some progress. what is the big green thing? in it is the way of placing a point
     

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  18. DavidJ

    DavidJ Alibre Super User

    The big green thing shows that you are in 3D sketch mode - not 2D Sketch mode. Insert Point works differently in each.
     
  19. dlaery

    dlaery Senior Member

    Finally. Much better.
    Thanks for the help!!
    I had to read and study your suggestions and now I think I have a better understanding. For me the missing link was to do the guide curves in 3D sketch and how to place points on my sketch.
    I feel like I can conquer the world now.
     

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  20. dlaery

    dlaery Senior Member

    well I'm having so much fun with my new found knowledge that I am doing things that I never could figure out how to do before.
    but I have run into a snag, :(
    in one of the pics you will see mirror function window that shows a preview of the result, then when I click "ok", a portion of the mirror is gone?o_O
     

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