You will get reasonable results with surface lofting, you don't have correct geometry for solid loft.
Most obvious result, (may not be correct).
As for the internal shape, you will have to break the inside arc on the right, then loft to the points again, stitch the surface lofts and Boundary fill as cut..
Left this one to you, because the outside result needs confirmation it is correct before proceeding.
Might help.....
You need to attach your MODEL and not just pictures to get help with your model. Please attach the MODEL. If you do not know how to attach your Fusion 360 model follow these easy steps. Open the model in Fusion 360, select the File menu, then Export and save as a F3D or F3Z file to your hard drive. Then use the Attachments section, of a forum post, to attach it.
John Hackney, Retired
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Part of learning is doing it yourself, I agree, but getting a correct and efficient process is just as important. If someone gives you the process, you should repeat it to learn it for yourself so next time it will be easier. Also, you yourself said in one of you last post said, "that sounds foreign to me" so words and pictures are not helping you.
John Hackney, Retired
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Most of my replies, to modeling problems, are accompanied by an video of the process or processes. There are many ways of learning, you need to be more open to them.
John Hackney, Retired
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The video is rather long as the process I used, in not hard, just time consuming. I did stop the video in some places where the process was very repetitive. I am not sure the Forum can accept such a long video so I am also adding it to my Dropbox and giving you a link to it here. If you want to keep the video, please download it from the Dropbox site as soon as possible as I have limited space. My model is attached.
If this solves your question, please pick on the "Accept Solution" or ask further questions.
John Hackney, Retired
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Much easier with your data.
Why is your origin not in centre of the tube? (Need to make a mirror plane instead)
Blue Lines and white points not recommended.
Not a 3d sketch / patch in sight, in fact I deleted most of your 4th sketch.
(I did not notice the small sliver when I did my mockup.)
Used the 4th and 5th sketches to make the surface loft that are needed. (Do 1 side mirror bodies to save time)
With the surfaces done and stitched, Extrude sketch 3 to the current body 1 face as New Body so we can hide body 1.
Use Boundary fill, and cut the red section out, and add new yellow material in.
Show body 1 and combine it to the new body.
You can Remove the construction bodies from the browser if you wish.
Walk up the timeline, Happy to answer questions.
Might help....
@beetlebasss wrote:There must always be a degree of self dependency even when asking for help…
@beetlebasss
I would model this very very differently.
@beetlebasss wrote:... How am I supposed to learn... ...steps on how to achieve what I am trying to do so that I may replicate it in the future.
Do you want to learn the right way?
(The other examples here did not demonstrate the right way - they only demonstrated how to build a house of cards on a foundation of quicksand.)
Virtually everything you have done was not done in the most efficient/robust/predictable way to model geometry.
When we walk out to the shop floor to machine a part - the first thing we do is establish a logical Origin (0,0,0) on the manufacturing machine.
The most logical location for your part is the center of the polygon/circle.
Blue lines and white dots (quicksand trap) should keep you awake at night.
Step 1. Start a new file and sketch a Polygon centered at the Origin. Dimension the side-to-side distance. Add a Horizontal Constraint to the bottom line. What do you observe?
If you elect to continue on with this discussion - the instruction will follow the BORN Technique, the most reliable/predictable/robust modeling technique that transfers to any CAD design software.
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