Copy cylinder around Z then twist it up

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Copy cylinder around Z then twist it up

Snörre
Hello all,
I'm a newbe on openscad.
I want to copy a cylinder around Z then copy it upwards. That's working but
I cannot get a twist in.

The first cylinder is:

module Zylinder ()
{ rotate ([90,0,0]) cylinder (h = 30, r=3 , $fn=6); }

Then I copy it around Z:

module FirstLayer()
{ for(a=[0 : 90 : 270])  rotate(a) Zylinder(); }

Until here it is working. I have 4 Cylinders like a cross.
But how can I copy the whole cross up let's say 20mm and twist it let's say
30° so I have the copied one 30° "twisted"?

Greets



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Re: Copy cylinder around Z then twist it up

OpenSCAD mailing list-2
Translate the second up (+z) 20mm   translate(0,0,20);


On 2020-04-19 9:43 a.m., Snörre wrote:
Hello all,
I'm a newbe on openscad.
I want to copy a cylinder around Z then copy it upwards. That's working but
I cannot get a twist in.

The first cylinder is:

module Zylinder ()
{ rotate ([90,0,0]) cylinder (h = 30, r=3 , $fn=6); }

Then I copy it around Z:

module FirstLayer()
{ for(a=[0 : 90 : 270])  rotate(a) Zylinder(); }

Until here it is working. I have 4 Cylinders like a cross.
But how can I copy the whole cross up let's say 20mm and twist it let's say
30° so I have the copied one 30° "twisted"?

Greets



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Re: Copy cylinder around Z then twist it up

Snörre
Sorry, I forgot to add this.

for(z=[ 0 : 10 : 10 ])
translate([0,0,z])
for(a=[0 : 90 : 270 ])
rotate(a)
rotate ([90,0,0]) cylinder (h = 30, r=3, $fn=6);


But on the "translated" I would like to have an additional rotation around "Z"

Something like an additional "rotate(b)" but then the lowest cross is also getting this copy.



Am Sonntag, 19. April 2020, 16:02:26 CEST schrieb Ron Wheeler via Discuss:

> Translate the second up (+z) 20mm   translate(0,0,20);
>
>
> On 2020-04-19 9:43 a.m., Snörre wrote:
> > Hello all,
> > I'm a newbe on openscad.
> > I want to copy a cylinder around Z then copy it upwards. That's working but
> > I cannot get a twist in.
> >
> > The first cylinder is:
> >
> > module Zylinder ()
> > { rotate ([90,0,0]) cylinder (h = 30, r=3 , $fn=6); }
> >
> > Then I copy it around Z:
> >
> > module FirstLayer()
> > { for(a=[0 : 90 : 270])  rotate(a) Zylinder(); }
> >
> > Until here it is working. I have 4 Cylinders like a cross.
> > But how can I copy the whole cross up let's say 20mm and twist it let's say
> > 30° so I have the copied one 30° "twisted"?
> >
> > Greets
> >
> >
> >
> > --
> > Sent from: http://forum.openscad.org/
> >
> > _______________________________________________
> > OpenSCAD mailing list
> > [hidden email]
> > http://lists.openscad.org/mailman/listinfo/discuss_lists.openscad.org
>
>

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Mit freundlichen Grüßen

Sören Schneider



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Re: Copy cylinder around Z then twist it up

Ian Nichols
On Sun, 19 Apr 2020 at 15:40, Sören Schneider <[hidden email]> wrote:
Sorry, I forgot to add this.

for(z=[ 0 : 10 : 10 ])
translate([0,0,z])
for(a=[0 : 90 : 270 ])
rotate(a)
rotate ([90,0,0]) cylinder (h = 30, r=3, $fn=6);


But on the "translated" I would like to have an additional rotation around "Z"

Something like an additional "rotate(b)" but then the lowest cross is also getting this copy.

  replace rotate(a) with rotate(a+z*3) 

Ian

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Re: Copy cylinder around Z then twist it up

Snörre

YESSSSSSS !!!!!!!

 

for(z=[ 0 : 10 : 60 ])

translate([0,0,z])

for(a=[0 : 90 : 270 ])

rotate(a+z)

rotate ([90,0,0]) cylinder (h = 30, r=3, $fn=6);

 

Now it looks like this:

 

 

 

Am Sonntag, 19. April 2020, 17:00:24 CEST schrieb Ian Nichols:

> On Sun, 19 Apr 2020 at 15:40, Sören Schneider <[hidden email]> wrote:

>

> > Sorry, I forgot to add this.

> >

> > for(z=[ 0 : 10 : 10 ])

> > translate([0,0,z])

> > for(a=[0 : 90 : 270 ])

> > rotate(a)

> > rotate ([90,0,0]) cylinder (h = 30, r=3, $fn=6);

> >

> >

> > But on the "translated" I would like to have an additional rotation around

> > "Z"

> >

> > Something like an additional "rotate(b)" but then the lowest cross is also

> > getting this copy.

> >

>

> replace rotate(a) with rotate(a+z*3)

>

> Ian

>

>

 

--

 

Mit freundlichen Grüßen

 

Sören Schneider


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