# Brain melting please help

**URL:** <https://discourse.shapr3d.com/t/brain-melting-please-help/12360>\
**Category:** Modeling Questions\
**Created:** [April 20, 2021, 6:50am UTC](https://discourse.shapr3d.com/t/brain-melting-please-help/12360 "2021-04-20T06:50:56Z")\
**Posts on this page:** 1\
**Showing post:** 6

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**Author:** ![Oregonerd](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/oregonerd/32/8012_2.png) [@Oregonerd](https://discourse.shapr3d.com/u/Oregonerd)\
**Post date:** [April 20, 2021, 3:58pm UTC](https://discourse.shapr3d.com/t/brain-melting-please-help/12360/6 "2021-04-20T15:58:56Z")

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I did mine by figuring the cut angles and rotating + subtracting bodies from a cylinder. You have 3 different cuts. I would approach it like a 6 sided object. Once you have the correct angle, simply rotate the the flat body 60 degrees and subtract. (see the top 6 triangles and the bottom 6 below them?) That will achieve the crown cuts. Then you have to figure the angle for the 12 upper girdle cuts.

In mine (see below) I drew a side profile on a construction plane, rotated it to create the 8 main features. I created a construction plane at the girdle and drew a top profile. That helped me figure the cut angle with the visual profile and top drawing. Note: you can create a construction plane between 3 points (See the triangles? 😉 from those I created a construction plane drew and extruded a body to cut from the cylinder, rotated 7 times and cut. I did this for each of the main cuts). Now some of the complex girdle cuts I couldn’t find the correct angles documented so I guessed.

> [@Brilliant cut](https://discourse.shapr3d.com/t/brilliant-cut/11435):
>
> Complete with girdle. My math isn’t perfect but it was fun.

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