How to model double (?) curved surfaces?

[sjoerdw]

I want to recreate a pottery lid for 3D printing, because the original is broken. I'm able to create the shape with one curve, using 'revolve', and the 6 part pattern, but I think the lid has double curved shapes and I don't know how to accomplish that. Can anyone point me in the right direction? I have added a picture of the lid for reference. Most grateful if anyone can help me out!

Best regards,

Sjoerd W. Bijleveld

[TheCADWhisperer]

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

[patilsm]

Hi @sjoerdw ,

I have checked your image file for lid, I think you can create it by using Loft with central guide rail.

Also you can use sweep with guide rail.

I have attached loft case, its not exactly same but you can follow that way for modelling lid.

Thanks and Regards,

Sagar Patil

[sjoerdw]

OK, I have attached the model. As you can see I have tried it with 'fillet', but that looks poor. For sure there is a better way to replicate the original lid. TIA!

[sjoerdw]

Hi Sagar,
Thanks for the input! I can’t find the attached loft case, maybe you can resend it? I did try ‘loft', but without a rail. I will look into that.

Best regards,
Sjoerd W

[patilsm · Accepted solution]

Hi @sjoerdw ,

Please check below attached file, where I make this in surfacing but later you can make in Solid body.

Check below file "LoftObject.f3d".

Thanks,

Sagar

[sjoerdw]

Hi Sagar,

Thanks, that looks promising! It seems that overlapping the various bodies does the trick. (I was responding to the email I did receive, but of course that message didn't have the f3d file and I probably overlooked it in this thread.)

[patilsm]

Hi @sjoerdw ,

Once we pattern all bodies then we can combine all and make it single body, and If you using surfacing then trim extra face what we get after intersecting to achieve exact shape.

Thanks and Regards,

Sagar Patil

[sjoerdw]

Hi Sagar,

I tried to understand the way you created the body by using 'loft', but I'm completely lost. I'm getting errors about point and non-points etc. Maybe you can make a cast about the process of choosing the right profile, point(s) and rail? Sorry, but I'm still a beginner when it comes to modelling more complex shapes!

[TheCADWhisperer]

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@sjoerdw wrote:

I'm getting errors ...

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

[TrippyLighting]

This is a perfect example to model with T-Splines.

[sjoerdw]

@TheCADWhisperer Which file do you mean, the loft example or my attempt? Because the latter I did send earlier today. I will attach my file anyway, which btw loads fine on my computer. 

[sjoerdw]

@TrippyLighting Thank you, I will look at the YT! I did try the 'form' option in Fusion, but gave up, maybe too soon 😉.

[sjoerdw]

@patilsm Hi Sagar, I did manage to reproduce the construction of the body. My mistake was that I tried it in solid mode. Once I switched to surface mode it was a piece of cake! Thanks and sorry for the confusion I may have caused. Now I can fine tune the model

BTW I did also try the T-spline/Forms mode, but at the moment that seems a bit of an overkill for this model, but I'm glad I did dive in a bit because it has enhanced my understanding of T-spline and the possibilities it offers!

[patilsm]

Hi @sjoerdw ,

It's great to see you are able to create your enquired geometry.Please let me know for any help while using Fusion.

Thanks,

Sagar Patil

[sjoerdw]

@patilsm Thank you, I will certainly ask your help if needed. I have almost finished my model, thanks to your input (and also from the other participants of this thread). I learned a lot in a short time!