INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Jobs

Loft & path (exercise in patience)

Loft & path (exercise in patience)

(OP)
Hi to you all, hope your're all doing well.

What 'rules' are there to follow when making guide paths for lofts?

Personally i'm having a hard time with these guide paths.
Sometimes I get them to work as intendet, other times i simply cannot get them to 'connect' to the section sketches to have an effect on the actual loft path.

Is there a right and wrong way to 'connect' them for example to section sketches? Where exatcly should they merge?

love

RE: Loft & path (exercise in patience)

Lofts require an intersection between the section sketches and the loft paths, as you well know.
I've had the same difficulty as you.
My current practice (that doesn't mean it's the best) is to define points, either sketch points in the sections or workpoints that are grounded to specific xyz coordinates.
Then build the sketch for the loft path, starting with a 2D work plane defined from the points, sketch on that plane, and "project" the points into the sketch. If making a 3D path you may not need the work plane or the 2D sketch to start, but it might not hurt either.

It's also possible to define all of the work planes first, fix the lines/points to the intersections of the planes, then pick up the points from there. Use those points for every sketch that has section or path lines. I think I was shown that during the training course, so it may be a better practice that the one I first showed.

Of course, with most designs that you figure out as you go, you might not discover a little "kink" in the swoopy path until after you've lofted dozens of other feature elements. Then the fix has to reference geometry attached to the last feature you created. Now you have to make a judgement call.

STF

RE: Loft & path (exercise in patience)

(OP)
New insights..

I will try 'your' point method, since i used to always used the "project geometry" method before.
What i've noticed is that the project option would sometimes fail when projecting 'complex' features.
(I guess although this sometimes works it does not mean it's the best way to do it)

I also noticed that the guide path would be ignored if it's 'too complex to follow', for lack of better wording.

Again thanks wink

RE: Loft & path (exercise in patience)

"complex features"...

What do they look like, if you don't mind my asking?
Have you tried lofting as surfaces rather than solids?
If doing multiple lofts, have you tried separating the bodies?

STF

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources


Close Box

Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close