# How would you go about this particular loft approach?

**URL:** <https://discourse.shapr3d.com/t/how-would-you-go-about-this-particular-loft-approach/26604>\
**Category:** Modeling Questions\
**Created:** [July 5, 2023, 8:54pm UTC](https://discourse.shapr3d.com/t/how-would-you-go-about-this-particular-loft-approach/26604 "2023-07-05T20:54:00Z")\
**Posts on this page:** 8\
**Page:** 1

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**Author:** ![Choopie](https://avatars.discourse-cdn.com/v4/letter/c/eb8c5e/32.png) [@Choopie](https://discourse.shapr3d.com/u/Choopie)\
**Post date:** [July 5, 2023, 8:54pm UTC](https://discourse.shapr3d.com/t/how-would-you-go-about-this-particular-loft-approach/26604/1 "2023-07-05T20:54:00Z")

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Hey gang,

I’m working on a helmet project for a mockup. I created my helmet as a mostly round shape, but I’m attempting to add a nose piece to it that will resemble the arch found in my googles/lens design.

In particular, I’m trying to get a super smooth transition between the bottom front portion helmet to the “face” off the 2D nose sketch I have positioned in front:

 ![IMG_0480.PNG](https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/3X/4/8/4887ac4229cadc6dc079ef630bcbfff5251ac7a2.jpeg)

Any tips on how to go about this? My few attempts have yet to yield something nice and seamless/smooth and I’m not sure how to approach this with already existing bodies. Any tips would be appreciated!

[nose\_loft.shapr](https://discourse.shapr3d.com/uploads/short-url/kkSXlsq8mFQz0WyurZrqfDIZNEt.shapr) (17.3 MB)

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**Author:** ![McD](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/mcd/32/15504_2.png) [@McD](https://discourse.shapr3d.com/u/McD)\
**Post date:** [July 5, 2023, 9:33pm UTC](https://discourse.shapr3d.com/t/how-would-you-go-about-this-particular-loft-approach/26604/2 "2023-07-05T21:33:56Z")

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If you haven’t already watched it, go to YouTube and look for the shaper 3-D channel. There is a an early version of a bicycle helmet with lots of unique shapes in it.

[![](https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/3X/8/f/8fa11610d6d0b73ac404f0d4a9bcd9912b3c941a.jpeg "3D modeling a bicycle helmet on iPad in Shapr3D") ](https://www.youtube.com/watch?v=FzP6Q1eaV_0)

[![](https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/3X/d/5/d57dd5af6ceb4573c687301b94a43c5c6412a4bb.jpeg "Modeling a Bike Helmet on iPad | Shapr3D") ](https://www.youtube.com/watch?v=8Sfxl-5OrnM)

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**Author:** ![Yoshiboy](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/yoshiboy/32/21293_2.png) [@Yoshiboy](https://discourse.shapr3d.com/u/Yoshiboy)\
**Post date:** [July 7, 2023, 12:15am UTC](https://discourse.shapr3d.com/t/how-would-you-go-about-this-particular-loft-approach/26604/3 "2023-07-07T00:15:34Z")

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Can you loft the surfaces?

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**Author:** ![Choopie](https://avatars.discourse-cdn.com/v4/letter/c/eb8c5e/32.png) [@Choopie](https://discourse.shapr3d.com/u/Choopie)\
**Post date:** [July 7, 2023, 12:40am UTC](https://discourse.shapr3d.com/t/how-would-you-go-about-this-particular-loft-approach/26604/4 "2023-07-07T00:40:57Z")

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How exactly do you mean? I’ve attempted but it’s not working with the curved surface of the front on the helmet 😕

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**Author:** ![TigerMike](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/tigermike/32/32650_2.png) [@TigerMike](https://discourse.shapr3d.com/u/TigerMike)\
**Post date:** [July 7, 2023, 2:09am UTC](https://discourse.shapr3d.com/t/how-would-you-go-about-this-particular-loft-approach/26604/5 "2023-07-07T02:09:38Z")

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Is this more or less what you’re trying to do?  
I didn’t use **Loft** , I used **Extrude** after re-drawing your nose sketch (no splines, just curves).

[https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/3X/0/d/0d267736e46410da2e7a319a22ed1778e3d2d0a8.mov](https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/3X/0/d/0d267736e46410da2e7a319a22ed1778e3d2d0a8.mov)

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<div class="post-metadata">

**Author:** ![Choopie](https://avatars.discourse-cdn.com/v4/letter/c/eb8c5e/32.png) [@Choopie](https://discourse.shapr3d.com/u/Choopie)\
**Post date:** [July 13, 2023, 8:49pm UTC](https://discourse.shapr3d.com/t/how-would-you-go-about-this-particular-loft-approach/26604/6 "2023-07-13T20:49:57Z")

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This is much closer to my goal! if it’s not a huge hassle, could you include some before screenshots of the sketches/curves used to achieve this? I’ve been beating my brain against this problem getting little headway made.

Regardless, thanks for the reply and suggestion, Mike!

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**Author:** ![TigerMike](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/tigermike/32/32650_2.png) [@TigerMike](https://discourse.shapr3d.com/u/TigerMike)\
**Post date:** [July 13, 2023, 10:24pm UTC](https://discourse.shapr3d.com/t/how-would-you-go-about-this-particular-loft-approach/26604/7 "2023-07-13T22:24:20Z")

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Here are two variations. The first is making the nose piece curved in one direction. For the second version I made a spherical curved body to subtract from the nose. The spherical body was translucent so I could see how much I wanted embed it before doing the Subtract (a little trick). After that I did a union of the nose and helmet and added the fillet radii.

One more thing. I made a new sketch for the nose using circle arcs. I stayed away from using spline curves. This made for better fillet radii on the outer part of the nose.

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<div class="post-metadata">

**Author:** ![Choopie](https://avatars.discourse-cdn.com/v4/letter/c/eb8c5e/32.png) [@Choopie](https://discourse.shapr3d.com/u/Choopie)\
**Post date:** [July 14, 2023, 6:00pm UTC](https://discourse.shapr3d.com/t/how-would-you-go-about-this-particular-loft-approach/26604/8 "2023-07-14T18:00:37Z")

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Supremely helpful, thank you for this!