# Help In creation of a specific geometry

**URL:** <https://discourse.mcneel.com/t/help-in-creation-of-a-specific-geometry/98376>\
**Category:** Grasshopper\
**Created:** [March 19, 2020, 11:27am UTC](https://discourse.mcneel.com/t/help-in-creation-of-a-specific-geometry/98376 "2020-03-19T11:27:22Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![orionency](https://sea3.discourse-cdn.com/mcneel/user_avatar/discourse.mcneel.com/orionency/32/208304_2.png) [@orionency](https://discourse.mcneel.com/u/orionency)\
**Post date:** [March 19, 2020, 11:27am UTC](https://discourse.mcneel.com/t/help-in-creation-of-a-specific-geometry/98376/1 "2020-03-19T11:27:22Z")

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Hi all, Im new to grasshopper and stuck in creating a specific shape. Can someone please help me out in steps/ process Ive to follow?  
Picture is attached.  
Thanks in advance!!! ![3d](https://global.discourse-cdn.com/mcneel/uploads/default/original/3X/0/5/058737bc5b9898294a8b2cb63577c88fe471d262.jpeg)

 ![plan](https://global.discourse-cdn.com/mcneel/uploads/default/original/3X/b/a/ba0dc56ba5f2a2b62ba2ed1431a68eef160f9282.jpeg)

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**Author:** ![laurent\_delrieu](https://sea3.discourse-cdn.com/mcneel/user_avatar/discourse.mcneel.com/laurent_delrieu/32/601605_2.png) [@laurent\_delrieu](https://discourse.mcneel.com/u/laurent_delrieu)\
**Post date:** [March 19, 2020, 10:13pm UTC](https://discourse.mcneel.com/t/help-in-creation-of-a-specific-geometry/98376/2 "2020-03-19T22:13:21Z")

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Hello  
your question is not clear. Why use Grasshopper for a basic shape ? If you want to use the power of Grasshopper you’ll have to decide what are the parameters (parametric means parameters !!!).  
Here I recreate something that seems to answer your vague question.  
So I draw a rounded rectangle, move it in Z, then draw a circle, move a copy in Z, then loft the 3 curves.  
It is very similar to the Rhino process. So in order to make Grasshopper you’ll have to deconstruct the way you model things and what parameter you want. Parameters + Model = Parametric modelling.  
Hope it helps.

 ![image](https://global.discourse-cdn.com/mcneel/uploads/default/original/3X/c/a/cad880b3b7f687426aaed72ea65bea10ee64d098.png)  
 ![image](https://global.discourse-cdn.com/mcneel/uploads/default/original/3X/5/5/55034e61bfa69fa14752d10b0019d45e5438747b.png)  
[column.gh](https://discourse.mcneel.com/uploads/short-url/jwiIsjHCTe2BPlnecUHh2JqUfRx.gh) (11.9 KB)  
And try to follow some tutorials, some webinars … and read that

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