Help with my workflow to make this piece

[stuartxwise]

Hi all,

I am a new user to Fusion360 but have had some experience in 3D Max some years ago.

I have taken on reconstructing the arm of the T800 from the film The Terminator, now for the most part I have had no problem as I found a very good set of Blueprints online.

But this piece has so far eluded me on how to actually model it. I have tried lofting the shape which made sense to me but I get some very strange results

The Cuff.png file is the blueprints for what I am trying to achieve.
And the Sketch.jpg file is what I have got so far. I appreciate this might be completely the wrong wat to do it, so any help would be greatly appreciated.

Many Thanks

[gautham_kattethota]

Hi Stuart,

I would not model it with loft using the sketches you have in your image.

As far as I can understand from the blueprint, the outer shape has been constructed with a loft followed by a cutout.  

I would use surfacing to achieve the desired result.  Here are the steps:

1. Start with a Surface Loft to get the outer shape of the body.  You can find the Surface Loft command under the Patch Workspace.

2. Create a sketch plane along the height of the lofted body and create the two arcs of the required radii, constrained properly according to the dimensions in the blueprint.  

3. In the Patch workspace, go to Modify>BodySplit command.  Select the loft body as the body to split and the sketch curves as the Splitting tool.  This should split the body into two pieces.  

4. Go to the browser, expand the Bodies folder, select the body you want to remove by using the Remove command in the context menu (Right-click) on the body.

5. Under Create dropdown, invoke the Thicken command, select the surface and provide the appropriate thickness value.

This should get you the result you need. Ofcourse, there are many different ways to skin a cat, so you might find a combination of other commands could get you the same end result.

If you need detailed steps, with images, let me know.  Hope this helps.

Regards

Gautham

[stuartxwise]

Hi Gautham,

Many thanks for your speedy reply.
I have not dabbled with the Patch workspace yet as I have only just got to grips with the Model workspace.

I am at work right now so can't look at what you have suggested on Fusion yet, but I wanted to thank you for posting as soon as I could.

I will take a look into your idea as soon as I get home and if I can't work it out I will let you know.

Thank you again
Stuart

[stuartxwise]

Hi Gautham,

I have had a look on the Patch workspace but can't find anything called Surface Loft, just the normal loft tool I have used in the Model Workspace.
I did a quick Youtube search and there is no videos on it either, well not for Fusion anyway.

If you don't mind going into some more detail on the workflow that would be very much appreciated as I have been trying this piece for a while now and my monitor can't take many more punches lol

Many thanks for all your help.

Stuart

[stuartxwise]

Hell again,

While I couldn't find the surface loft tool, the idea of making the outer shell in one piece first definately worked and I have now managed to get the right shape.

Many thanks Gautham that was a great help.

[gautham_kattethota · Accepted solution]

Hi Stuart,

Very glad to see that you have managed to design the shape in Fusion.  

Just to close the loop on Surface Loft - I was referring to the Loft command in the Patch workspace.  Many of the commands in the Patch workspace are also found in the Model workspace, such as Extrude, Sweep, Loft, etc.  But the difference is what the commands produce.  The commands in the Patch workspace produce surfaces/sheets while the ones in the Model workspace produce solid bodies.  

Regards

Gautham

[stuartxwise]

That makes sense.

Thankyou very much for your help, quite a simple piece to model once you understand the toolset.

A great forum here, very fast and helpful

Kind Regards

Stuart