3D sketch issues

[markhD4V8S]

I am trying to make a part that has to about 20mm shell (open on one side) and has a bend.

  I am attempting to use 3D sketch but having difficulty getting the sketch to 'close'. 

if I do a really rough one (not going where it really needs to go) I have no trouble. 

I assume I am still not connecting a couple lines (ones that go into a different plane)- but cannot seem to make it work

please look at this sketch and help me with the issues. 

[kacper.suchomski]

Hi

The sketches are missing many constraints.

Go back to the first sketch and make sure it's rigid.

Then apply all necessary constraints to the second sketch; remember to create repeating elements through projection, not drawing.

As a general rule, you should not finish working on a sketch until the padlock icon appears next to it in your browser.

[laughingcreek]

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@markhD4V8S wrote:

I am trying to make a part that has to about 20mm shell (open on one side) and has a bend.

  I am attempting to use 3D sketch but having difficulty getting the sketch to 'close'. 

....

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if by "close" you mean have a light blue profile, then the problem is you only get that with sketches that are planer.  you're not going to get it with a 3d sketch.

most likely, a 3d sketch isn't the way to go here.  what were your next steps going to be?  the only tool that might work with this sketch would be a surface patch, and it is going to be a warped mess, and not likely the nice part your envisioning.

can you give us some info on what your trying to do?  such as a pic or something?

[markhD4V8S]

Darn, I made a long reply, then it wanted me to sign in again and lost it.    I will post up a picture of the part I’m making. 

[markhD4V8S]

here is what I'm trying to make. I could get the basic shape pretty close using 'sheet metal' - but of course the fillets etc didn't work. 

  I goofed up bending this one- but it does fit well. I would like to try and do it (with support) the proper shape- plus there will be other times I want to do this and I don't have a good idea on how. 

 if I could just bend bodies, it would be easy. 

thanks for any help.

[markhD4V8S]

well, after reading responses, and thinking some more. I did a different method. 

 I changed the 'main' extrude to more that I wanted in the end. Then made a plane on the angle and location I wanted- split the body and removed the part I didn't want. 
then I could hollow it out. still working in it, but looks much more that I want. 

still like to hear other methods. 

[davebYYPCU]

Based off your sketches,

Lofted the lower black lines.

I extended the larger panel and Lofted to the first body, trimmed off the excess.

Added a constant Fillet but can be a variable Fillet if that helps.

Pic shows the back lines might have an S bend ??, can't tell.

If it were me, I would sketch on these 2 planes so the single loft could be achieved between them.

3d sketches not required.

Might help...

[johnsonshiue]

Hi Mark,

Instead of creating the whole model in one operation, I create patch surfaces on individual 2D profiles. Next, stitch the surfaces into a new surface body. Add fillets. Thicken the surface to the desirable thickness and convert it to a Sheet Metal body. The Flat Pattern can be created too.

Many thanks!

[markhD4V8S]

I do not know how to do most of those - but it would be a good learning opportunity.