Solid loft that I cannot get to solve between the sketch and the end of the solid

[jagSJMV8]

I have a similar problem with a solid loft that I cannot get to solve between the scetch and the end of the solid.

Why can I not just click the end of the solid and the outer circle of the scetch?

@jagSJMV8 A new thread was created and the title modified for this post to increase findability. Original: Loft not possible?  CGBenner

[TheCADWhisperer]

@jagSJMV8 

Can you File>Export your *.f3d file to your local drive and then Attach it here to a Reply?

No islands in Loft.

Shell.

Undefined geometry should keep you awake at night.

[johnsonshiue]

Hi! I believe you will need to do it in two steps. First, create the Loft for the outer profiles. Next, create a Loft Cut using inner profiles.

Many thanks!

[jagSJMV8]

Sorry  - I thought I had exported it.

I have tried with shell extrude and thickening but it does not solve the geometry

[TheCADWhisperer]

@jagSJMV8 

Start a new part file.

Start a new sketch on the top plane.

Sketch a Construction Circle as shown below...

Now sketch a Vertical Construction Line to the left of the Origin as shown below...

Now add a Midpoint Constraint between the vertical line and the Origin...

Now add a 36mm dimension to the Vertical Line.

What do you observe about the color of the sketch geometry after adding the dimension?

[jagSJMV8]

Initially I have an orange dottet circle and a black vertical one

After pressing the coincident contraint I get black/black as you show - I have tried to do both a solid and surface extrude to it but cannot do the solid and surface only to the solid circle. I can surface extrude to inner and outer circle but not the solid - i include updated file

[jagSJMV8 · Accepted solution]

After this I applied a patch which have solved the issue, but I don't know why the solid loft does not work. I can finish it with surfaces, but I would like to know what I am misunderstanding or doing wrong.

[davebYYPCU]

Using all of the last 2 sketches, solid Loft, as New Body.

Shell this new body 0.50 wall thickness.

Combine Join the two bodies.

Might help...

[jagSJMV8]

Thanks Dave, 

This method gives edges on the ID of protrution that does not get solved - I had similar results by edge shell and 0.5 thickness. What resolves right is to have two shell extrudes - ID and OD and then fill the space with a patch. I think I just have to accept that I don't understand why the solid does not work. 

[davebYYPCU]

What part of my file Loft - did not work?

I did not continue with your double surface lofts (deleted) was far more work, to then Patch both ends, and Stitch to Solid, before Combining the new body.

Might help...

[TheCADWhisperer · Accepted solution]

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@jagSJMV8 wrote:

Initially I have an orange dottet circle and a black vertical one

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@jagSJMV8 

You should always fully define your sketch geometry such that it turns black and shows lock symbols in browser.

I think I just have to accept that I don't understand why the solid does not work. 

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See Attached file.

[jagSJMV8]

Hi Dave, 

The wall of the side tubes comes in at 45 degree which means that if the section analysis is done from the top it does not fit as the wall due to the angle is about 0.7 thick if projected on the XY plane but 0.5 on the other two planes

[TheCADWhisperer · Accepted solution]

Shell (at right time in history) returns consistent wall thickness.

If you want the tapered ends to be shelled too - change the history.

[johnsonshiue]

Hi! There are multiple ways to do this. Here is a more compact design with a ball joint at the intersection. However, the pressure profile would be totally different than the original design .CFD Analysis is highly recommended.

Many thanks!