topic Re: How can I model a small bent spiral (attach)? in Libraries & objects

How can I model a small bent spiral (attach)?

Mats_Knutsson — Wed, 16 Jul 2025 13:42:44 GMT

Hi,
I converted a sketchup object but need to modify the spiral and thought I 'd better do the spiral myself but I got stuck. How would you model this? It does't have to be perfect.
Br,
Mats

Re: How can I model a small bent spiral (attach)?

Podolsky — Mon, 05 Jul 2021 15:30:57 GMT

There is spiral object in ArchiCAD library under Basic Shapes section. But it's not bending. Maybe someone worldwide has created bended spiral object - but I didn't see.
Maybe you need to model it in more advanced modeller. Try Blender. I assume it would be faster to do it in external animation program than trying to figure out how to do it in ArchiCAD. I, with my 20+ years experience, don't know anything apart having it programmed on GDL, that in case of bended spiral is not straight forward. I will need at least several days to figure out how to describe mathematically bended spiral path to program the object.

Re: How can I model a small bent spiral (attach)?

Mats_Knutsson — Tue, 06 Jul 2021 06:18:20 GMT

Podolsky wrote:
There is spiral object in ArchiCAD library under Basic Shapes section. But it's not bending. Maybe someone worldwide has created bended spiral object - but I didn't see.
Maybe you need to model it in more advanced modeller. Try Blender. I assume it would be faster to do it in external animation program than trying to figure out how to do it in ArchiCAD. I, with my 20+ years experience, don't know anything apart having it programmed on GDL, that in case of bended spiral is not straight forward. I will need at least several days to figure out how to describe mathematically bended spiral path to program the object.

Yes probably the way in Blender. GDL math is for Yoda.

Re: How can I model a small bent spiral (attach)?

David O — Tue, 28 Sep 2021 17:06:34 GMT

Hi Mats

Did you manage to get your spiral made? If not let me know the sizes & I will make for you

Regards

David