Le 06/01/2016 09:11, Thomas de Groot a écrit :
> On 6-1-2016 6:48, Mike Horvath wrote:
>> How do I create a spiral tube, like a spring? Like this:
>>
>> http://www.f-lohmueller.de/pov_tut/animate/anim16e.htm
>>
>> but a single object, not a union of spheres?
>>
>> Thanks!
>>
> In a modeller, this is pretty easy, for instance building a spiral line
> segment (aka a spline) and an appropriate surface to follow it. However,
> that may not be what you want.
>

generating a spline along an helix is rather easy. Then if sphere_sweep 
is acceptable, the problem is solved.

Now, do you considere sphere_sweep a single object ?

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