Tricky 3D modelling concept

Tricky 3D modelling concept

Anonymous
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Message 1 of 24

Tricky 3D modelling concept

Anonymous
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Hi all, 

 

Really need some help. Long story short, I have a model I need to make, which was supplied on paper (rather as a PDF) as cross sections in 2mm steps. I have got these into Fusion as outlines, and I have stacked them up. I now really need to find a way of smootly linking between the cross sections, in order to make my 3D shape. Here is a link to a picture of what I mean: 

 

If I loft each of them to meet the next, I end up with this, which matches the specification, but I want to 3D print it, and obviously it's not ideal for that: 

 

 

I want a smooth representation of the shape, that hits the cross sections where it needs to at each 2mm step. Anyone know the best way to do this? I've asked and tried everything I can think of so fat, and I'm quite new to all this!

 

Many thanks for any help

 

Lee 

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Message 21 of 24

etfrench
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@SaeedHamza Those are just individual layer extrusions.

 

Here's one with a few half layer lofts:

EarStack.jpg

The missing layers have Loft errors.  I did a couple to show that it's possible to use the half layer technique to remove the error. In any case, Fusion 360's lofting algorithms don't give smooth results even when the two layers align fairly close.  Look at the blue layer under the largest gap.

ETFrench

EESignature

Message 22 of 24

Anonymous
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Wow, thanks everyone for taking a good swing at this! This is a really cool community. Making intermediate profiles looks like it might be something I can work on until it works... I am happy to sit there and manually do something, as long as there's something that can work! I've been through quite a few dead ends with this project so far. 

 

As requested the project file with the rough, steppy model is here. It is simply every layer extruded upwards to meet the next.

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Message 23 of 24

PhilProcarioJr
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@Anonymous

This can easily be done with T-Splines and the face tool and some simple extrusions. It's tedious but completely possible.

I would make a video but I'm not sure how complex you need this to be.



Phil Procario Jr.
Owner, Laser & CNC Creations

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Message 24 of 24

Anonymous
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Hi Phil,

 

I am unfamiliar with T splines, so I will need to do some research on that. Thanks for the advice though, I'll look into it and try to make it work!

 

 

Many thanks, 

 

Lee

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