# Work on a flat circle, then make it convex

**URL:** <https://discourse.shapr3d.com/t/work-on-a-flat-circle-then-make-it-convex/15807>\
**Category:** Modeling Questions\
**Created:** [November 12, 2021, 9:28am UTC](https://discourse.shapr3d.com/t/work-on-a-flat-circle-then-make-it-convex/15807 "2021-11-12T09:28:58Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![Bror](https://avatars.discourse-cdn.com/v4/letter/b/b5ac83/32.png) [@Bror](https://discourse.shapr3d.com/u/Bror)\
**Post date:** [November 12, 2021, 9:28am UTC](https://discourse.shapr3d.com/t/work-on-a-flat-circle-then-make-it-convex/15807/1 "2021-11-12T09:28:59Z")

</div>

hi, Im trying to make a big frying pan with handles. I was wondering if there is a way to work with a flat circle at first and then, when I’m done, make the hole design convex, concave?

---

<div class="post-metadata">

**Author:** ![TheBum](https://avatars.discourse-cdn.com/v4/letter/t/eada6e/32.png) [@TheBum](https://discourse.shapr3d.com/u/TheBum)\
**Post date:** [November 12, 2021, 4:25pm UTC](https://discourse.shapr3d.com/t/work-on-a-flat-circle-then-make-it-convex/15807/2 "2021-11-12T16:25:12Z")

</div>

You can create a cutting body with the shape you want and then do a Boolean subtraction to cut it out of the solid body. An easier approach is to create the shape initially by sketching out half the cross section and then revolving it around the central axis.

---

<div class="post-metadata">

**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:** [November 12, 2021, 5:24pm UTC](https://discourse.shapr3d.com/t/work-on-a-flat-circle-then-make-it-convex/15807/3 "2021-11-12T17:24:36Z")

</div>

Here’s a way. **Extrude** a circle with draft (20° in my example). Radius the bottom. Then use **Shell**.

[https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/2X/1/17d26ec2534ba27d03cef3b468f18c73ee8f67b7.mov](https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/2X/1/17d26ec2534ba27d03cef3b468f18c73ee8f67b7.mov)