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ScaredyCat
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PostPosted: 23:27 - 05 Jul 2015    Post subject: OpenSCAD Experts? Reply with quote
I know some of you do 3d printing and I seem to remember someone uses openSCAD. I've built my object, but in such a way that it's essentially a series of thin layers:

https://dl.dropboxusercontent.com/u/188253/_bcf/openscad1.png

There are a couple of reasons for this

1. I want to be able to build a prototype by printing templates for each layer and then cut them out of cardboard for test assembly.

2. I want to use a mixture of materials in the final object, so layers seems to be the simplest approach.

While I can export an STL file, the only thing I have that can read them is OpenSCAD and if I try to export as an image OpenSCAD tells me it's not a 2d object (fair enough) - So how do I go about getting the layers printed on my printer?
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nowhere.elysium
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PostPosted: 23:32 - 05 Jul 2015    Post subject: Reply with quote
Can you not export each layer piece as a dxf?
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ScaredyCat
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PostPosted: 23:48 - 05 Jul 2015    Post subject: Reply with quote
nowhere.elysium wrote:
Can you not export each layer piece as a dxf?


No, it wont let me. The console says

Quote:
WARNING: Current top level object is not a 2D object.

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nowhere.elysium
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PostPosted: 10:03 - 06 Jul 2015    Post subject: Reply with quote
OK, take a look at projection, then.

https://en.wikibooks.org/wiki/OpenSCAD_User_Manual/3D_to_2D_Projection

:edit: the 'not a 2d object' thing is weird - dxf can handle 3d objects just fine.
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ScaredyCat
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PostPosted: 10:13 - 06 Jul 2015    Post subject: Reply with quote
nowhere.elysium wrote:
OK, take a look at projection, then.

https://en.wikibooks.org/wiki/OpenSCAD_User_Manual/3D_to_2D_Projection

:edit: the 'not a 2d object' thing is weird - dxf can handle 3d objects just fine.


Saved each layer as an STL and then reopened in openscad and used

Code:
projection(cut = false) import("v2-mid-startlayer.stl");


and can now export as DXF - although, for added fun, under linux the only export available seems to be for STL whereas on my Mac I get multiple file format options.
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nowhere.elysium
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PostPosted: 10:20 - 06 Jul 2015    Post subject: Reply with quote
ScaredyCat wrote:
Saved each layer as an STL and then reopened in openscad and used

Code:
projection(cut = false) import("v2-mid-startlayer.stl");
What? Why?

Use an iterator to move the whole model in Z in whatever increments you need, with cut set to true. So much less faff, and it's an eminently re-usable function afterwards.
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ScaredyCat
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PostPosted: 11:05 - 06 Jul 2015    Post subject: Reply with quote
nowhere.elysium wrote:
What? Why?

Use an iterator to move the whole model in Z in whatever increments you need, with cut set to true. So much less faff, and it's an eminently re-usable function afterwards.


It's not a solid object sliced it's individual layers (about 4mm thick). ie A module for each layer and I just render the one I'm interested in.

My first go with openscad so I'm just learning but the intention isn't to get it 3d printed, but laser cut instead.
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nowhere.elysium
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PostPosted: 12:19 - 06 Jul 2015    Post subject: Reply with quote
ScaredyCat wrote:

My first go with openscad so I'm just learning but the intention isn't to get it 3d printed, but laser cut instead.
What did you want it cut from? If it's metal, I can't help, but wood or plastics are fine in my machines at work.
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ScaredyCat
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PostPosted: 15:33 - 06 Jul 2015    Post subject: Reply with quote
nowhere.elysium wrote:
ScaredyCat wrote:

My first go with openscad so I'm just learning but the intention isn't to get it 3d printed, but laser cut instead.
What did you want it cut from? If it's metal, I can't help, but wood or plastics are fine in my machines at work.


I want wood, although I've no idea what sort of wood is suitable. A lot of what I've seen is ply stuff - I suspect you have much more knowledge on what wood cuts well with a nice finish. What sort of file format would it need to be in? I've managed to get the layers into inkscape using slic3r.

Also found that red seems to be the colour for cuts and black for engraving and 0.01mm line widths?
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Old Thread Alert!

The last post was made 11 years, 56 days ago. Instead of replying here, would creating a new thread be more useful?
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