OpenSCAD for Laser Cutter use?

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M W
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OpenSCAD for Laser Cutter use?

M W
Hi all - I've been trying to use Inkscape to make a vector graphics file for use in a Laser Cutter that I have occasional use for.

Inkscape just isn't totally my cuppa tea as it doesn't have the tools I'm used to (I usually do PC Board CAD, there's ALWAYS a way to measure everything's dimensions LOL) - so I thought I'd ask if anyone has ideas on how to use OpenSCAD for that?

A properly done PDF file can be used to burn wood with that cutter, I like OpenSCAD's ability to have measurements built in from my code, just curious if I am barking up the wrong tree or what? It's SO much easier for me to draw dimensioned plans in OpenSCAD than in Inkscape, LOL (But then I'm not claiming to be an artist LOL)

Thanks,

  Mark
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Re: OpenSCAD for Laser Cutter use?

nophead


On 25 May 2012 22:39, M W <[hidden email]> wrote:
Hi all - I've been trying to use Inkscape to make a vector graphics file for use in a Laser Cutter that I have occasional use for.

Inkscape just isn't totally my cuppa tea as it doesn't have the tools I'm used to (I usually do PC Board CAD, there's ALWAYS a way to measure everything's dimensions LOL) - so I thought I'd ask if anyone has ideas on how to use OpenSCAD for that?

You can use 2D primitives like circle and square with union, difference, etc to produce a complex 2D shape. That can be exported as a DXF and laser cut. Or you can make a 3D model and project a slice of it into 2D.


A properly done PDF file can be used to burn wood with that cutter, I like OpenSCAD's ability to have measurements built in from my code, just curious if I am barking up the wrong tree or what? It's SO much easier for me to draw dimensioned plans in OpenSCAD than in Inkscape, LOL (But then I'm not claiming to be an artist LOL)

I use Inkscape to convert 2D DXFs to PDF.
 

Thanks,

  Mark

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M W
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Re: OpenSCAD for Laser Cutter use?

M W
From: nop head <[hidden email]>

>To: M W <[hidden email]>; [hidden email]
>Sent: Friday, May 25, 2012 2:51 PM
>Subject: Re: [OpenSCAD] OpenSCAD for Laser Cutter use?
>
>
>>On 25 May 2012 22:39, M W <[hidden email]> wrote:
>>
>>Hi all - I've been trying to use Inkscape to make a vector graphics file for use in a Laser Cutter that I have occasional use for.
>>
>>Inkscape just isn't totally my cuppa tea as it doesn't have the tools I'm used to (I usually do PC Board CAD, there's ALWAYS a way to measure everything's dimensions LOL) - so I thought I'd ask if anyone has ideas on how to use OpenSCAD for that?
>
>   You can use 2D primitives like circle and square with union, difference, etc to produce a complex 2D shape.
>   That can be exported as a DXF and laser cut. Or you can make a 3D model and project a slice of it into 2D.


I mainly want to be able to draw lines, those are 2D primitives too :)

>A properly done PDF file can be used to burn wood with that cutter, I like OpenSCAD's ability to have measurements built in from my code, just curious if I am barking up the wrong tree or what? It's SO much easier for me to draw dimensioned plans in OpenSCAD than in Inkscape, LOL (But then I'm not claiming to be an artist LOL)
>
>
>I use Inkscape to convert 2D DXFs to PDF.


Sounds do-able :) Thanks!


  Mark

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Re: OpenSCAD for Laser Cutter use?

nophead


On 25 May 2012 23:09, M W <[hidden email]> wrote:
From: nop head <[hidden email]>
>To: M W <[hidden email]>; [hidden email]
>Sent: Friday, May 25, 2012 2:51 PM
>Subject: Re: [OpenSCAD] OpenSCAD for Laser Cutter use?
>
>
>>On 25 May 2012 22:39, M W <[hidden email]> wrote:
>>
>>Hi all - I've been trying to use Inkscape to make a vector graphics file for use in a Laser Cutter that I have occasional use for.
>>
>>Inkscape just isn't totally my cuppa tea as it doesn't have the tools I'm used to (I usually do PC Board CAD, there's ALWAYS a way to measure everything's dimensions LOL) - so I thought I'd ask if anyone has ideas on how to use OpenSCAD for that?
>
>   You can use 2D primitives like circle and square with union, difference, etc to produce a complex 2D shape.
>   That can be exported as a DXF and laser cut. Or you can make a 3D model and project a slice of it into 2D.


I mainly want to be able to draw lines, those are 2D primitives too :)

You can't have a single line but there is a polygon primitive where you specify all the vertices. 

>A properly done PDF file can be used to burn wood with that cutter, I like OpenSCAD's ability to have measurements built in from my code, just curious if I am barking up the wrong tree or what? It's SO much easier for me to draw dimensioned plans in OpenSCAD than in Inkscape, LOL (But then I'm not claiming to be an artist LOL)
>
>
>I use Inkscape to convert 2D DXFs to PDF.


Sounds do-able :) Thanks!


  Mark
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Re: OpenSCAD for Laser Cutter use?

Giles Bathgate-2

Hi,

Rapcad supports polyline primitives but dosen't do dxf export (yet) anyway I mentioned it because polylines could be implemented in openscad its supported by cgal at least.

Regards

Giles

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Re: OpenSCAD for Laser Cutter use?

nophead
Its hard to see how they would fit in with the other primitives. How do you use them?

On 26 May 2012 08:34, Giles Bathgate <[hidden email]> wrote:

Hi,

Rapcad supports polyline primitives but dosen't do dxf export (yet) anyway I mentioned it because polylines could be implemented in openscad its supported by cgal at least.

Regards

Giles


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Re: OpenSCAD for Laser Cutter use?

Giles Bathgate-2

All the boolean set operations work with them so for example the intersection of two lines is a point. But to use in the context of 3D you can use it as a mincowski path to create "glide" like extrusions or just as an edge to be used as part of a hull set. Obviously the main use is for 2D, but you could also use a closed polygon primitive in most cases. I implemented it really because I want rapcad to be able to generate tool paths for reprap.

Regards

Giles

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Re: OpenSCAD for Laser Cutter use?

nophead
How does it display? I.e. what thickness does it get rendered with?

It might be useful for creating dimension lines and text if it was, for example, always one pixel wide regardless of zoom.

On 26 May 2012 09:09, Giles Bathgate <[hidden email]> wrote:

All the boolean set operations work with them so for example the intersection of two lines is a point. But to use in the context of 3D you can use it as a mincowski path to create "glide" like extrusions or just as an edge to be used as part of a hull set. Obviously the main use is for 2D, but you could also use a closed polygon primitive in most cases. I implemented it really because I want rapcad to be able to generate tool paths for reprap.

Regards

Giles


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Re: OpenSCAD for Laser Cutter use?

Giles Bathgate-2
polyline() only gets rendered when you do view->Show Edges, or
view->Skeleton. the thickness could be customiseable, but it doesn't
change when you zoom. Points are also rendered when show Edges is
enabled, and they are ridiculous large blobs, they could do with being
smaller and customiseable size (in rapcad as well as openscad)

Regards

Giles

On 26 May 2012 09:31, nop head <[hidden email]> wrote:

> How does it display? I.e. what thickness does it get rendered with?
>
> It might be useful for creating dimension lines and text if it was, for
> example, always one pixel wide regardless of zoom.
>
> On 26 May 2012 09:09, Giles Bathgate <[hidden email]> wrote:
>>
>> All the boolean set operations work with them so for example the
>> intersection of two lines is a point. But to use in the context of 3D you
>> can use it as a mincowski path to create "glide" like extrusions or just as
>> an edge to be used as part of a hull set. Obviously the main use is for 2D,
>> but you could also use a closed polygon primitive in most cases. I
>> implemented it really because I want rapcad to be able to generate tool
>> paths for reprap.
>>
>> Regards
>>
>> Giles
>>
>>
>> _______________________________________________
>> OpenSCAD mailing list
>> [hidden email]
>> http://rocklinux.net/mailman/listinfo/openscad
>>
>
>
> _______________________________________________
> OpenSCAD mailing list
> [hidden email]
> http://rocklinux.net/mailman/listinfo/openscad
>

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Re: OpenSCAD for Laser Cutter use?

Alan Cox
In reply to this post by Giles Bathgate-2
On Sat, 26 May 2012 09:09:45 +0100
Giles Bathgate <[hidden email]> wrote:

> All the boolean set operations work with them so for example the
> intersection of two lines is a point. But to use in the context of 3D you
> can use it as a mincowski path to create "glide" like extrusions or just as
> an edge to be used as part of a hull set. Obviously the main use is for 2D,
> but you could also use a closed polygon primitive in most cases. I
> implemented it really because I want rapcad to be able to generate tool
> paths for reprap.

Applying a bend to a 2D or 3D object is another use for a polyline, and
something else that OpenSCAD basically can't handle right now.

Alan