AM
Adrian Mariano
Fri, Oct 25, 2024 6:54 PM
Jordan posted a detailed description of the banana shaped cross section you
need to make a helix with linear extrude and twist. Definitely not a circle
or an ellipse.
On Fri, Oct 25, 2024 at 14:44 nop head via Discuss <
discuss@lists.openscad.org> wrote:
If you are using sweep the profile is just a circle but if you are linear
extruding with a twist then the profile is what you would get if you slice
a spiral spring horizontally. That isn't an ellipse. An ellipse is what you
would get if you sliced an inclined cylinder but a helix bends so it's
cross section is an ellipse bent around the helix diameter.
On Fri, 25 Oct 2024, 19:12 Father Horton via Discuss, <
discuss@lists.openscad.org> wrote:
I think what he wants is what you’d get if you wrapped a wire with a
circular cross section around a cylinder. And I think that’s what this will
produce.
On Fri, Oct 25, 2024 at 12:28 PM nop head via Discuss <
discuss@lists.openscad.org> wrote:
I don't think that is quite right because if you slice a helix you don't
get an ellipse. It is an ellipse bent around the circle of the spiral.
On Fri, 25 Oct 2024 at 18:10, Father Horton via Discuss <
discuss@lists.openscad.org> wrote:
Let d be the diameter of the circle and alpha be the angle of the
helix. Then create a circle of diameter d, scale it by [1,
1/cos(90-alpha)], and linear_extrude that. I think that’s what you want.
On Fri, Oct 25, 2024 at 11:43 AM gene heskett via Discuss <
discuss@lists.openscad.org> wrote:
On 10/25/24 07:36, mike.fraser.1945+osc--- via Discuss wrote:
Morning folks,
Is there any way to create a helix with a circular cross-section? I
tried linear_extrude with both a circle & various ovals as input.
tried various BOLS2 threading functions. I can get the helix easily
not with a smooth circle cross-section.
I am doing this in both linuxcnc and in openscad, by rendering each
"slice" of a buttress thread at a slight tilt angle, thereby blending
the resultant surface areas effectively at the thread angle. Actually
its rendered once, then rotated into place. Speeds rendering when the
spiral is 20 turns of the screw long in 2 start and the slice is a
half
a degree thick. More than one way to skin that cat. ;o)>
Gene.
Cheers, Gene Heskett, CET.
"There are four boxes to be used in defense of liberty:
soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author, 1940)
If we desire respect for the law, we must first make the law
respectable.
OpenSCAD mailing list
To unsubscribe send an email to discuss-leave@lists.openscad.org
Jordan posted a detailed description of the banana shaped cross section you
need to make a helix with linear extrude and twist. Definitely not a circle
or an ellipse.
On Fri, Oct 25, 2024 at 14:44 nop head via Discuss <
discuss@lists.openscad.org> wrote:
> If you are using sweep the profile is just a circle but if you are linear
> extruding with a twist then the profile is what you would get if you slice
> a spiral spring horizontally. That isn't an ellipse. An ellipse is what you
> would get if you sliced an inclined cylinder but a helix bends so it's
> cross section is an ellipse bent around the helix diameter.
>
> On Fri, 25 Oct 2024, 19:12 Father Horton via Discuss, <
> discuss@lists.openscad.org> wrote:
>
>> I think what he wants is what you’d get if you wrapped a wire with a
>> circular cross section around a cylinder. And I think that’s what this will
>> produce.
>>
>> On Fri, Oct 25, 2024 at 12:28 PM nop head via Discuss <
>> discuss@lists.openscad.org> wrote:
>>
>>> I don't think that is quite right because if you slice a helix you don't
>>> get an ellipse. It is an ellipse bent around the circle of the spiral.
>>>
>>> On Fri, 25 Oct 2024 at 18:10, Father Horton via Discuss <
>>> discuss@lists.openscad.org> wrote:
>>>
>>>> Let d be the diameter of the circle and alpha be the angle of the
>>>> helix. Then create a circle of diameter d, scale it by [1,
>>>> 1/cos(90-alpha)], and linear_extrude that. I think that’s what you want.
>>>>
>>>> On Fri, Oct 25, 2024 at 11:43 AM gene heskett via Discuss <
>>>> discuss@lists.openscad.org> wrote:
>>>>
>>>>> On 10/25/24 07:36, mike.fraser.1945+osc--- via Discuss wrote:
>>>>> > Morning folks,
>>>>> >
>>>>> > Is there any way to create a helix with a circular cross-section? I
>>>>> have
>>>>> > tried linear_extrude with both a circle & various ovals as input.
>>>>> I’ve
>>>>> > tried various BOLS2 threading functions. I can get the helix easily
>>>>> but
>>>>> > not with a smooth circle cross-section.
>>>>> >
>>>>> I am doing this in both linuxcnc and in openscad, by rendering each
>>>>> "slice" of a buttress thread at a slight tilt angle, thereby blending
>>>>> the resultant surface areas effectively at the thread angle. Actually
>>>>> its rendered once, then rotated into place. Speeds rendering when the
>>>>> spiral is 20 turns of the screw long in 2 start and the slice is a
>>>>> half
>>>>> a degree thick. More than one way to skin that cat. ;o)>
>>>>> Gene.
>>>>> > Mike
>>>>> >
>>>>> >
>>>>> > _______________________________________________
>>>>> > OpenSCAD mailing list
>>>>> > To unsubscribe send an email to discuss-leave@lists.openscad.org
>>>>>
>>>>> Cheers, Gene Heskett, CET.
>>>>> --
>>>>> "There are four boxes to be used in defense of liberty:
>>>>> soap, ballot, jury, and ammo. Please use in that order."
>>>>> -Ed Howdershelt (Author, 1940)
>>>>> If we desire respect for the law, we must first make the law
>>>>> respectable.
>>>>> - Louis D. Brandeis
>>>>> _______________________________________________
>>>>> OpenSCAD mailing list
>>>>> To unsubscribe send an email to discuss-leave@lists.openscad.org
>>>>>
>>>> _______________________________________________
>>>> OpenSCAD mailing list
>>>> To unsubscribe send an email to discuss-leave@lists.openscad.org
>>>>
>>> _______________________________________________
>>> OpenSCAD mailing list
>>> To unsubscribe send an email to discuss-leave@lists.openscad.org
>>>
>> _______________________________________________
>> OpenSCAD mailing list
>> To unsubscribe send an email to discuss-leave@lists.openscad.org
>>
> _______________________________________________
> OpenSCAD mailing list
> To unsubscribe send an email to discuss-leave@lists.openscad.org
>
JB
Jordan Brown
Fri, Oct 25, 2024 7:19 PM
On 10/25/2024 11:54 AM, Adrian Mariano via Discuss wrote:
Jordan posted a detailed description of the banana shaped cross
section you need to make a helix with linear extrude and twist.
Definitely not a circle or an ellipse.
On 10/25/2024 11:54 AM, Adrian Mariano via Discuss wrote:
> Jordan posted a detailed description of the banana shaped cross
> section you need to make a helix with linear extrude and twist.
> Definitely not a circle or an ellipse.
https://lists.openscad.org/empathy/thread/DC2WDIIZS57SIDWVAVKDN3NEN4MOZOYM
Hans did the same thing much earlier in a Thingiverse post.
Attached image
MK
Marko Kleine Berkenbusch
Fri, Oct 25, 2024 7:26 PM
I realize I am late to the party, but here is what I sometimes do when I
need to create some sort of helical feature. Any convex 2D geometry (in
this case a circle) can be passed as a child to the helix module and it
stitches together a number of thin slices of the profile via calls to
hull():
// extrude a helix with radius 'Radius', N revolutions, pitch
module helix (Radius, N, pitch, fa=10, eps=1e-3) {
for (i=[0:N360/fa-1]) {
hull() {
rotate([0, 0, ifa])
translate([Radius, 0, pitchifa/360])
rotate([90+180*(pitch/(23.14Radius))/3.14, 0, 0])
linear_extrude(height=eps, center=true) children();
rotate([0, 0, (i+1)fa])
translate([Radius, 0, pitch(i+1)fa/360])
rotate([90+180(pitch/(23.14Radius))/3.14, 0, 0])
linear_extrude(height=eps, center=true)
children();
}
}
}
helix(Radius=4, N=4, pitch=3, fa=5) circle(r=1, $fn=30);
On Fri, Oct 25, 2024 at 3:20 PM Jordan Brown via Discuss <
discuss@lists.openscad.org> wrote:
I realize I am late to the party, but here is what I sometimes do when I
need to create some sort of helical feature. Any convex 2D geometry (in
this case a circle) can be passed as a child to the helix module and it
stitches together a number of thin slices of the profile via calls to
hull():
// extrude a helix with radius 'Radius', N revolutions, pitch
module helix (Radius, N, pitch, fa=10, eps=1e-3) {
for (i=[0:N*360/fa-1]) {
hull() {
rotate([0, 0, i*fa])
translate([Radius, 0, pitch*i*fa/360])
rotate([90+180*(pitch/(2*3.14*Radius))/3.14, 0, 0])
linear_extrude(height=eps, center=true) children();
rotate([0, 0, (i+1)*fa])
translate([Radius, 0, pitch*(i+1)*fa/360])
rotate([90+180*(pitch/(2*3.14*Radius))/3.14, 0, 0])
linear_extrude(height=eps, center=true)
children();
}
}
}
helix(Radius=4, N=4, pitch=3, fa=5) circle(r=1, $fn=30);
On Fri, Oct 25, 2024 at 3:20 PM Jordan Brown via Discuss <
discuss@lists.openscad.org> wrote:
> On 10/25/2024 11:54 AM, Adrian Mariano via Discuss wrote:
>
> Jordan posted a detailed description of the banana shaped cross section
> you need to make a helix with linear extrude and twist. Definitely not a
> circle or an ellipse.
>
>
> https://lists.openscad.org/empathy/thread/DC2WDIIZS57SIDWVAVKDN3NEN4MOZOYM
>
> Hans did the same thing much earlier in a Thingiverse post.
>
> [image: Attached image]
> _______________________________________________
> OpenSCAD mailing list
> To unsubscribe send an email to discuss-leave@lists.openscad.org
>
RW
Raymond West
Fri, Oct 25, 2024 8:35 PM
On 25/10/2024 12:35, mike.fraser.1945+osc--- via Discuss wrote:
Morning folks,
Is there any way to create a helix with a circular cross-section? I
have tried linear_extrude with both a circle & various ovals as input.
I’ve tried various BOLS2 threading functions. I can get the helix
easily but not with a smooth circle cross-section.
Mike
OpenSCAD mailing list
To unsubscribe send an email to discuss-leave@lists.openscad.org
see my post of the 14th (and 19th). Just use a circular profile. Or use
cadstudio.
On 25/10/2024 12:35, mike.fraser.1945+osc--- via Discuss wrote:
>
> Morning folks,
>
> Is there any way to create a helix with a circular cross-section? I
> have tried linear_extrude with both a circle & various ovals as input.
> I’ve tried various BOLS2 threading functions. I can get the helix
> easily but not with a smooth circle cross-section.
>
> Mike
>
>
> _______________________________________________
> OpenSCAD mailing list
> To unsubscribe send an email to discuss-leave@lists.openscad.org
see my post of the 14th (and 19th). Just use a circular profile. Or use
cadstudio.
RW
Raymond West
Fri, Oct 25, 2024 9:39 PM
cadstudio = cadview...
On 25/10/2024 21:35, Raymond West via Discuss wrote:
On 25/10/2024 12:35, mike.fraser.1945+osc--- via Discuss wrote:
Morning folks,
Is there any way to create a helix with a circular cross-section? I
have tried linear_extrude with both a circle & various ovals as
input. I’ve tried various BOLS2 threading functions. I can get the
helix easily but not with a smooth circle cross-section.
Mike
OpenSCAD mailing list
To unsubscribe send an email to discuss-leave@lists.openscad.org
see my post of the 14th (and 19th). Just use a circular profile. Or
use cadstudio.
OpenSCAD mailing list
To unsubscribe send an email to discuss-leave@lists.openscad.org
cadstudio = cadview...
On 25/10/2024 21:35, Raymond West via Discuss wrote:
>
> On 25/10/2024 12:35, mike.fraser.1945+osc--- via Discuss wrote:
>>
>> Morning folks,
>>
>> Is there any way to create a helix with a circular cross-section? I
>> have tried linear_extrude with both a circle & various ovals as
>> input. I’ve tried various BOLS2 threading functions. I can get the
>> helix easily but not with a smooth circle cross-section.
>>
>> Mike
>>
>>
>> _______________________________________________
>> OpenSCAD mailing list
>> To unsubscribe send an email to discuss-leave@lists.openscad.org
> see my post of the 14th (and 19th). Just use a circular profile. Or
> use cadstudio.
> _______________________________________________
> OpenSCAD mailing list
> To unsubscribe send an email to discuss-leave@lists.openscad.org
NH
nop head
Fri, Oct 25, 2024 9:48 PM
These are all made by sweeping a circle on a helical path. Much easier than
using linear_extrude with a twist.
[image: image.png]
On Fri, 25 Oct 2024 at 22:40, Raymond West via Discuss <
discuss@lists.openscad.org> wrote:
cadstudio = cadview...
On 25/10/2024 21:35, Raymond West via Discuss wrote:
On 25/10/2024 12:35, mike.fraser.1945+osc--- via Discuss wrote:
Morning folks,
Is there any way to create a helix with a circular cross-section? I
have tried linear_extrude with both a circle & various ovals as
input. I’ve tried various BOLS2 threading functions. I can get the
helix easily but not with a smooth circle cross-section.
Mike
OpenSCAD mailing list
To unsubscribe send an email to discuss-leave@lists.openscad.org
see my post of the 14th (and 19th). Just use a circular profile. Or
use cadstudio.
OpenSCAD mailing list
To unsubscribe send an email to discuss-leave@lists.openscad.org
These are all made by sweeping a circle on a helical path. Much easier than
using linear_extrude with a twist.
[image: image.png]
On Fri, 25 Oct 2024 at 22:40, Raymond West via Discuss <
discuss@lists.openscad.org> wrote:
> cadstudio = cadview...
>
> On 25/10/2024 21:35, Raymond West via Discuss wrote:
> >
> > On 25/10/2024 12:35, mike.fraser.1945+osc--- via Discuss wrote:
> >>
> >> Morning folks,
> >>
> >> Is there any way to create a helix with a circular cross-section? I
> >> have tried linear_extrude with both a circle & various ovals as
> >> input. I’ve tried various BOLS2 threading functions. I can get the
> >> helix easily but not with a smooth circle cross-section.
> >>
> >> Mike
> >>
> >>
> >> _______________________________________________
> >> OpenSCAD mailing list
> >> To unsubscribe send an email to discuss-leave@lists.openscad.org
> > see my post of the 14th (and 19th). Just use a circular profile. Or
> > use cadstudio.
> > _______________________________________________
> > OpenSCAD mailing list
> > To unsubscribe send an email to discuss-leave@lists.openscad.org
> _______________________________________________
> OpenSCAD mailing list
> To unsubscribe send an email to discuss-leave@lists.openscad.org
>
SP
Sanjeev Prabhakar
Fri, Oct 25, 2024 11:05 PM
Original poster is sitting quite. It seems he has got his answer
On Sat, 26 Oct, 2024, 3:18 am nop head via Discuss, <
discuss@lists.openscad.org> wrote:
These are all made by sweeping a circle on a helical path. Much easier
than using linear_extrude with a twist.
[image: image.png]
On Fri, 25 Oct 2024 at 22:40, Raymond West via Discuss <
discuss@lists.openscad.org> wrote:
cadstudio = cadview...
On 25/10/2024 21:35, Raymond West via Discuss wrote:
On 25/10/2024 12:35, mike.fraser.1945+osc--- via Discuss wrote:
Morning folks,
Is there any way to create a helix with a circular cross-section? I
have tried linear_extrude with both a circle & various ovals as
input. I’ve tried various BOLS2 threading functions. I can get the
helix easily but not with a smooth circle cross-section.
Mike
OpenSCAD mailing list
To unsubscribe send an email to discuss-leave@lists.openscad.org
see my post of the 14th (and 19th). Just use a circular profile. Or
use cadstudio.
OpenSCAD mailing list
To unsubscribe send an email to discuss-leave@lists.openscad.org
Original poster is sitting quite. It seems he has got his answer
On Sat, 26 Oct, 2024, 3:18 am nop head via Discuss, <
discuss@lists.openscad.org> wrote:
> These are all made by sweeping a circle on a helical path. Much easier
> than using linear_extrude with a twist.
>
> [image: image.png]
>
> On Fri, 25 Oct 2024 at 22:40, Raymond West via Discuss <
> discuss@lists.openscad.org> wrote:
>
>> cadstudio = cadview...
>>
>> On 25/10/2024 21:35, Raymond West via Discuss wrote:
>> >
>> > On 25/10/2024 12:35, mike.fraser.1945+osc--- via Discuss wrote:
>> >>
>> >> Morning folks,
>> >>
>> >> Is there any way to create a helix with a circular cross-section? I
>> >> have tried linear_extrude with both a circle & various ovals as
>> >> input. I’ve tried various BOLS2 threading functions. I can get the
>> >> helix easily but not with a smooth circle cross-section.
>> >>
>> >> Mike
>> >>
>> >>
>> >> _______________________________________________
>> >> OpenSCAD mailing list
>> >> To unsubscribe send an email to discuss-leave@lists.openscad.org
>> > see my post of the 14th (and 19th). Just use a circular profile. Or
>> > use cadstudio.
>> > _______________________________________________
>> > OpenSCAD mailing list
>> > To unsubscribe send an email to discuss-leave@lists.openscad.org
>> _______________________________________________
>> OpenSCAD mailing list
>> To unsubscribe send an email to discuss-leave@lists.openscad.org
>>
> _______________________________________________
> OpenSCAD mailing list
> To unsubscribe send an email to discuss-leave@lists.openscad.org
>
RW
Raymond West
Sat, Oct 26, 2024 11:13 AM
all I need is a design for a nut 😉
On 25/10/2024 22:48, nop head via Discuss wrote:
These are all made by sweeping a circle on a helical path. Much easier
than using linear_extrude with a twist.
image.png
On Fri, 25 Oct 2024 at 22:40, Raymond West via Discuss
discuss@lists.openscad.org wrote:
cadstudio = cadview...
On 25/10/2024 21:35, Raymond West via Discuss wrote:
On 25/10/2024 12:35, mike.fraser.1945+osc--- via Discuss wrote:
Morning folks,
Is there any way to create a helix with a circular
have tried linear_extrude with both a circle & various ovals as
input. I’ve tried various BOLS2 threading functions. I can get the
helix easily but not with a smooth circle cross-section.
Mike
OpenSCAD mailing list
To unsubscribe send an email to discuss-leave@lists.openscad.org
see my post of the 14th (and 19th). Just use a circular profile. Or
use cadstudio.
OpenSCAD mailing list
To unsubscribe send an email to discuss-leave@lists.openscad.org
_______________________________________________
OpenSCAD mailing list
To unsubscribe send an email to discuss-leave@lists.openscad.org
OpenSCAD mailing list
To unsubscribe send an email todiscuss-leave@lists.openscad.org
all I need is a design for a nut 😉
On 25/10/2024 22:48, nop head via Discuss wrote:
> These are all made by sweeping a circle on a helical path. Much easier
> than using linear_extrude with a twist.
>
> image.png
>
> On Fri, 25 Oct 2024 at 22:40, Raymond West via Discuss
> <discuss@lists.openscad.org> wrote:
>
> cadstudio = cadview...
>
> On 25/10/2024 21:35, Raymond West via Discuss wrote:
> >
> > On 25/10/2024 12:35, mike.fraser.1945+osc--- via Discuss wrote:
> >>
> >> Morning folks,
> >>
> >> Is there any way to create a helix with a circular
> cross-section? I
> >> have tried linear_extrude with both a circle & various ovals as
> >> input. I’ve tried various BOLS2 threading functions. I can get the
> >> helix easily but not with a smooth circle cross-section.
> >>
> >> Mike
> >>
> >>
> >> _______________________________________________
> >> OpenSCAD mailing list
> >> To unsubscribe send an email to discuss-leave@lists.openscad.org
> > see my post of the 14th (and 19th). Just use a circular profile. Or
> > use cadstudio.
> > _______________________________________________
> > OpenSCAD mailing list
> > To unsubscribe send an email to discuss-leave@lists.openscad.org
> _______________________________________________
> OpenSCAD mailing list
> To unsubscribe send an email to discuss-leave@lists.openscad.org
>
>
> _______________________________________________
> OpenSCAD mailing list
> To unsubscribe send an email todiscuss-leave@lists.openscad.org
SP
Sanjeev Prabhakar
Sat, Oct 26, 2024 12:32 PM
all I need is a design for a nut 😉
On 25/10/2024 22:48, nop head via Discuss wrote:
These are all made by sweeping a circle on a helical path. Much easier
than using linear_extrude with a twist.
[image: image.png]
On Fri, 25 Oct 2024 at 22:40, Raymond West via Discuss <
discuss@lists.openscad.org> wrote:
cadstudio = cadview...
On 25/10/2024 21:35, Raymond West via Discuss wrote:
On 25/10/2024 12:35, mike.fraser.1945+osc--- via Discuss wrote:
Morning folks,
Is there any way to create a helix with a circular cross-section? I
have tried linear_extrude with both a circle & various ovals as
input. I’ve tried various BOLS2 threading functions. I can get the
helix easily but not with a smooth circle cross-section.
Mike
OpenSCAD mailing list
To unsubscribe send an email to discuss-leave@lists.openscad.org
see my post of the 14th (and 19th). Just use a circular profile. Or
use cadstudio.
OpenSCAD mailing list
To unsubscribe send an email to discuss-leave@lists.openscad.org
nice one
On Sat, 26 Oct 2024 at 16:44, Raymond West via Discuss <
discuss@lists.openscad.org> wrote:
> all I need is a design for a nut 😉
>
>
>
>
> On 25/10/2024 22:48, nop head via Discuss wrote:
>
> These are all made by sweeping a circle on a helical path. Much easier
> than using linear_extrude with a twist.
>
> [image: image.png]
>
> On Fri, 25 Oct 2024 at 22:40, Raymond West via Discuss <
> discuss@lists.openscad.org> wrote:
>
>> cadstudio = cadview...
>>
>> On 25/10/2024 21:35, Raymond West via Discuss wrote:
>> >
>> > On 25/10/2024 12:35, mike.fraser.1945+osc--- via Discuss wrote:
>> >>
>> >> Morning folks,
>> >>
>> >> Is there any way to create a helix with a circular cross-section? I
>> >> have tried linear_extrude with both a circle & various ovals as
>> >> input. I’ve tried various BOLS2 threading functions. I can get the
>> >> helix easily but not with a smooth circle cross-section.
>> >>
>> >> Mike
>> >>
>> >>
>> >> _______________________________________________
>> >> OpenSCAD mailing list
>> >> To unsubscribe send an email to discuss-leave@lists.openscad.org
>> > see my post of the 14th (and 19th). Just use a circular profile. Or
>> > use cadstudio.
>> > _______________________________________________
>> > OpenSCAD mailing list
>> > To unsubscribe send an email to discuss-leave@lists.openscad.org
>> _______________________________________________
>> OpenSCAD mailing list
>> To unsubscribe send an email to discuss-leave@lists.openscad.org
>>
>
> _______________________________________________
> OpenSCAD mailing list
> To unsubscribe send an email to discuss-leave@lists.openscad.org
>
> _______________________________________________
> OpenSCAD mailing list
> To unsubscribe send an email to discuss-leave@lists.openscad.org
>
JD
John David
Sat, Oct 26, 2024 5:56 PM
all I need is a design for a nut 😉
On 25/10/2024 22:48, nop head via Discuss wrote:
These are all made by sweeping a circle on a helical path. Much easier
than using linear_extrude with a twist.
[image: image.png]
On Fri, 25 Oct 2024 at 22:40, Raymond West via Discuss <
discuss@lists.openscad.org> wrote:
cadstudio = cadview...
On 25/10/2024 21:35, Raymond West via Discuss wrote:
On 25/10/2024 12:35, mike.fraser.1945+osc--- via Discuss wrote:
Morning folks,
Is there any way to create a helix with a circular cross-section? I
have tried linear_extrude with both a circle & various ovals as
input. I’ve tried various BOLS2 threading functions. I can get the
helix easily but not with a smooth circle cross-section.
Mike
OpenSCAD mailing list
To unsubscribe send an email to discuss-leave@lists.openscad.org
see my post of the 14th (and 19th). Just use a circular profile. Or
use cadstudio.
OpenSCAD mailing list
To unsubscribe send an email to discuss-leave@lists.openscad.org
Maybe like the screws that can be tightened turning both left and right?
https://www.youtube.com/watch?app=desktop&v=_48-Ike_i6M
That can hurt your noggin, but I get it...
EBo --
On Sat, Oct 26, 2024 at 8:33 AM Sanjeev Prabhakar via Discuss <
discuss@lists.openscad.org> wrote:
> nice one
>
> On Sat, 26 Oct 2024 at 16:44, Raymond West via Discuss <
> discuss@lists.openscad.org> wrote:
>
>> all I need is a design for a nut 😉
>>
>>
>>
>>
>> On 25/10/2024 22:48, nop head via Discuss wrote:
>>
>> These are all made by sweeping a circle on a helical path. Much easier
>> than using linear_extrude with a twist.
>>
>> [image: image.png]
>>
>> On Fri, 25 Oct 2024 at 22:40, Raymond West via Discuss <
>> discuss@lists.openscad.org> wrote:
>>
>>> cadstudio = cadview...
>>>
>>> On 25/10/2024 21:35, Raymond West via Discuss wrote:
>>> >
>>> > On 25/10/2024 12:35, mike.fraser.1945+osc--- via Discuss wrote:
>>> >>
>>> >> Morning folks,
>>> >>
>>> >> Is there any way to create a helix with a circular cross-section? I
>>> >> have tried linear_extrude with both a circle & various ovals as
>>> >> input. I’ve tried various BOLS2 threading functions. I can get the
>>> >> helix easily but not with a smooth circle cross-section.
>>> >>
>>> >> Mike
>>> >>
>>> >>
>>> >> _______________________________________________
>>> >> OpenSCAD mailing list
>>> >> To unsubscribe send an email to discuss-leave@lists.openscad.org
>>> > see my post of the 14th (and 19th). Just use a circular profile. Or
>>> > use cadstudio.
>>> > _______________________________________________
>>> > OpenSCAD mailing list
>>> > To unsubscribe send an email to discuss-leave@lists.openscad.org
>>> _______________________________________________
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