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  #1  
Old Mon 27 June 2011, 10:52
farredondo
Just call me: Faustino
 
Monterrey
Mexico
Creating halftone pictures with a cnc machine - lines or dots

I've been going nuts for the past month, trying to find out who is the developer of a software that engraves images by making lines or holes. Pretty amazing stuff. Any help?

http://www.flickr.com/photos/decusti...in/photostream


http://www.decustik.com/index.php?seccio=cataleg&id=103

By the way, Gracias Señor Geral_D, great site!

Last edited by farredondo; Mon 27 June 2011 at 10:57..
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  #2  
Old Mon 27 June 2011, 11:04
fabrun
Just call me: fabrice
 
france
France
it's something you can do with Mach3
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  #3  
Old Mon 27 June 2011, 11:31
Gerald D
Just call me: Gerald (retired)
 
Cape Town
South Africa
http://www.vectric.com/WebSite/Vectr.../pvc_index.htm
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  #4  
Old Mon 27 June 2011, 11:56
farredondo
Just call me: Faustino
 
Monterrey
Mexico
I've been looking at the Mach 3 but I belive this is from a vector creating software, it's called pixel mosaic carving.
http://www.decustik.com/index.php?seccio=catalogo&id=81
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  #5  
Old Mon 27 June 2011, 12:09
danilom
Just call me: Danilo #64
 
Novi Sad
Serbia
Interesting, I was also looking for something like that yesterday and came out with this software:
http://www.halftone.com.br/

Did not contact them but found the other way. convert image to halftone by some photo editing tool (photoshop etc.) then import bitmap into Aspire and Trace Bitmap. It produces some irregular shapes but that does not matter, cleanup not needed ones and select all then create Drilling toolpath. Well its a workaround which is not good as their software, because with their software you can use V bit or step drill and it will create variable size dots.
Is someone has a better solution to this other than buying this software please post.
Images created this way are so cool!

Thanks
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  #6  
Old Mon 27 June 2011, 14:47
danilom
Just call me: Danilo #64
 
Novi Sad
Serbia
Well this produces much nicer quality but I still cant figure out how to machine it, even using vcarve option the larger dots are not made by simple plunging.

http://designlibertario.wordpress.co...-com-inkscape/
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  #7  
Old Mon 27 June 2011, 15:16
farredondo
Just call me: Faustino
 
Monterrey
Mexico
I've tried that by vectorizing it via Inkscape and Illustrator, but I'm stuck as soon as I get it to Mastercam. Any ideas?
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  #8  
Old Mon 27 June 2011, 16:41
olz
Just call me: Bubolz
 
Pelotas/RS
Brazil
Salve!

See this topic on (Guia CNC - need register)

http://www.guiacnc.com.br/index.php/topic,7993.0.html

on page 8 is a step by step with images.

Abs.

Paulo Marcos G. Bubolz
----------------------------------
Design libertário - Free files for milling
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  #9  
Old Mon 27 June 2011, 17:42
farredondo
Just call me: Faustino
 
Monterrey
Mexico
Paulo

Preciso de sua ajuda, por favor, minha conta está sendo aprovado no local do Brasil e estou muito interessado em receber suas instruções. Obrigado

NEED your help please, my account is being approved at the site of Brazil and I am very interested in receiving your instructions. Thanks
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  #10  
Old Mon 27 June 2011, 20:24
olz
Just call me: Bubolz
 
Pelotas/RS
Brazil
Salve!

Creating vector halftones from bitmaps using Inkscape.

Creating vector halftones from bitmaps using Inkscape.

01 - Open any image in inkscape preferably already in grayscale and with good contrast adjustment.

02 - Change the scale of millimeters to inkscape. Draw a circle in the upper left corner of the image by pressing CTRL so that the shape is perfectly circular, leaving only the outline remove the fill. The size of the circle should be 3 mm for cutting tool VBit 3mmX60°.

03 - Even with the circle selected, go to menu "Edit" click Clone / Create tiled clones.

04 - In the dialog "Create tiled clones" on the "Symmetry" check option "width, height" and enter the values ​​match the height and width of the chosen image.

05 - Still in the dialog "Create tiled clones" click the "Trace" and leave only the options marked "Trace drawing under the tiles," "Color" and "size". Finally click "create."

Delete the first point and original image e pronto!

tomorrow I'll post the configuration of Artcam.

Abs.

Paulo Marcos G. Bubolz
----------------------------------
Design libertário - Free files for milling
Attached Images
File Type: jpg halftone_01.jpg (56.5 KB, 835 views)
File Type: jpg halftone_02.jpg (66.9 KB, 838 views)
File Type: jpg halftone_03.jpg (62.3 KB, 837 views)
File Type: jpg halftone_04.jpg (77.5 KB, 839 views)
File Type: jpg halftone_05.jpg (77.8 KB, 839 views)
Attached Files
File Type: pdf angelina.pdf (943.9 KB, 63 views)
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  #11  
Old Mon 27 June 2011, 23:08
lumberjack_jeff
Just call me: Jeff #31
 
Montesano, WA
United States of America
Excellent tip Paulo! I'm going to try this.
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  #12  
Old Tue 28 June 2011, 04:46
normand blais
Just call me: Normand
 
montreal
Canada
poor man photo vcarv


http://www.vectric.com/forum/viewtop...&view=previous
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  #13  
Old Tue 28 June 2011, 04:54
danilom
Just call me: Danilo #64
 
Novi Sad
Serbia
Its not about vcarving, this method looks better to me on large images and with less detail to carve,
my purpose for using HALFTONE is to make large images that will be viewed from some distance, that is where halftone comes to its real purpose. It's just like newspaper images were printed with lots of dots and if you look it with magnifier you see only dots.

I think that the price for Halftone CNC application is mentioned 150$ on a brasilian forum? Could any of the native readers confirm that?
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  #14  
Old Tue 28 June 2011, 05:26
olz
Just call me: Bubolz
 
Pelotas/RS
Brazil
Salve!

Quote:
Originally Posted by danilom View Post
I think that the price for Halftone CNC application is mentioned 150$ on a brasilian forum? Could any of the native readers confirm that?
Yes

R$ 150,00 (Real Brasileiro).

US$ 93,00 (American Dollar).

João Paulo site developer:

http://www.halftone.com.br/


Abs.

Paulo Marcos G. Bubolz
----------------------------------
Design libertário - Free files for milling

Last edited by olz; Tue 28 June 2011 at 05:36..
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  #15  
Old Tue 28 June 2011, 05:49
farredondo
Just call me: Faustino
 
Monterrey
Mexico
What I'm trying to acomplish is making large format prints in HDF or aluminum for facades. I'm looking for a better idea for what I'm currently doing rignt now.





Obrigado Paulo, Thanks for the tip!

Last edited by farredondo; Tue 28 June 2011 at 05:56..
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  #16  
Old Tue 28 June 2011, 06:02
normand blais
Just call me: Normand
 
montreal
Canada
http://www.talkshopbot.com/forum/sho...light=halftone

Thios one about picture with dots
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  #17  
Old Tue 28 June 2011, 06:03
olz
Just call me: Bubolz
 
Pelotas/RS
Brazil
Thank you!

I believe you will success with this method.

You can use any shape and not just points (in the case of large areas).

Grande abraço.

Paulo Marcos G. Bubolz
----------------------------------
Design libertário - Free files for milling

Last edited by olz; Tue 28 June 2011 at 06:09..
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  #18  
Old Tue 28 June 2011, 10:25
PEU
Just call me: Pablo
 
Buenos Aires
Argentina
Quote:
Originally Posted by farredondo View Post
What I'm trying to acomplish is making large format prints in HDF or aluminum for facades. I'm looking for a better idea for what I'm currently doing rignt now.
That picture is not just holes, it looks like a duotone pasted over a matrix of holes, if you zoom at the image you will see that image edges are not holes but a hole covered partially by the duotone.

I just did the same in coreldraw:




Pablo
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  #19  
Old Tue 28 June 2011, 20:07
olz
Just call me: Bubolz
 
Pelotas/RS
Brazil
Salve!

Halftone configuration in Artcam

01 - Open halftones (Previously created in Inkscape and saved as PDF).
02 - In Tab "Toolpaths" Select V-bit Carving.
03 - In "Tool" select the appropriate tool, in this case V-bit 3mm 60º.
04 - Select "Center line" and limit max 3mm.

Abs.

Paulo Marcos G. Bubolz
----------------------------------
Design libertário - Free files for milling
Attached Images
File Type: jpg halftone_artcam_01.jpg (142.1 KB, 796 views)
File Type: jpg halftone_artcam_02.jpg (132.4 KB, 792 views)
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  #20  
Old Wed 29 June 2011, 09:50
lumberjack_jeff
Just call me: Jeff #31
 
Montesano, WA
United States of America
Quote:
Originally Posted by olz View Post
Salve!

Creating vector halftones from bitmaps using Inkscape.
I created a "halftone" from a desaturated photo. The full image (below is a small excerpt) is comprised of 25,000 black outlined circles of varying diameter. (Far too dense. At one circle per second that still would take 6+ hours to carve)

How do I get this array of circles into sheetcam? I tried to export dxf from Inkscape, but the resulting file was one, single polygon of about 10 facets approximating the shape of the 3mm circle.

Looking at the image, I think the effect of the actual carved part would be better emulated by using circles with gray fill and without a border.
Attached Images
File Type: gif halftone.gif (130.3 KB, 769 views)

Last edited by lumberjack_jeff; Wed 29 June 2011 at 10:00..
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  #21  
Old Wed 29 June 2011, 10:52
olz
Just call me: Bubolz
 
Pelotas/RS
Brazil
EN------------------------------------------------

Hi!

Unfortunately I do not know the Sheetcam.

To export, choose the PDF format.

The fill color does not matter, but remove the edge of the circle is really necessary.

In step 2 where you say to remove the fill, you should remove the border.

"02 - Change the scale of millimeters to inkscape. Draw a circle in the upper left corner of the image by pressing CTRL so that the shape is perfectly circular, leaving only the fill remove the stroke. The size of the circle should be 3 mm for cutting tool VBit 3mmX60°.

I tried to fix but the forum does not allow edit the post.


PT_BR----------------------------------------------

Olá!

Infelizmente não conheço o sheetcam.

Para exportar escolha o formato PDF. Outros formatos podem apresentar problemas.

A cor do preenchimento não importa, mas remover a borda do círculo é fundamental.

No passo 2 onde digo para remover o preenchimento, deve-se remover na verdade a borda.

Tentei corrigir mas o forum não permite editar o post.

Abs.

Paulo Marcos G. Bubolz
----------------------------------
Design libertário - Free files for milling

Last edited by olz; Wed 29 June 2011 at 11:13.. Reason: fix
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  #22  
Old Wed 29 June 2011, 11:15
lumberjack_jeff
Just call me: Jeff #31
 
Montesano, WA
United States of America
Here is a variation on the same process.

The circles are shown against a tan background and with a radial fill emulating a v-carved depression.

PDF isn't a good format to use to input into a cam program, but I was able to successfully import .svg into sheetcam.

This is really a useful technique.
Attached Images
File Type: gif halftone2.gif (37.4 KB, 763 views)
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  #23  
Old Wed 29 June 2011, 11:33
lumberjack_jeff
Just call me: Jeff #31
 
Montesano, WA
United States of America
Pablo, here's Che using the above technique.
Attached Images
File Type: png che_halftone.png (32.6 KB, 753 views)
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  #24  
Old Wed 29 June 2011, 12:20
olz
Just call me: Bubolz
 
Pelotas/RS
Brazil
Infinite possibilities!

Abs.

Paulo Marcos G. Bubolz
----------------------------------
Design libertário - Free files for milling
Attached Images
File Type: jpg Cristo.jpg (139.7 KB, 758 views)
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  #25  
Old Wed 29 June 2011, 12:39
danilom
Just call me: Danilo #64
 
Novi Sad
Serbia
Halftone rulez ! Thanks Olz!

I tried with friends Artcam and the result is exactly what is needed. Aspire produced the toolpath that produces the same thing but with lots of unnecessary moves which resulted 4x more gcode.
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  #26  
Old Thu 28 July 2011, 22:53
lumberjack_jeff
Just call me: Jeff #31
 
Montesano, WA
United States of America
http://hackaday.com/2011/07/28/creat...a-cnc-machine/
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  #27  
Old Fri 29 July 2011, 05:28
olz
Just call me: Bubolz
 
Pelotas/RS
Brazil
Quote:
Originally Posted by lumberjack_jeff View Post

Amazing! link to software:

http://www.students.tut.fi/~syvajar3/

Abs.

Paulo Marcos G. Bubolz
----------------------------------
Design libertário - Free files for milling

Last edited by olz; Fri 29 July 2011 at 05:32..
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  #28  
Old Fri 29 July 2011, 12:37
PEU
Just call me: Pablo
 
Buenos Aires
Argentina
Very nice results with that link olz! I used white/black so I can machine, paint and then use sandpaper to remove the paint from the surface leaving the holes painted. for the parameters I used spacing=3 and min/max diameter 1/3 everything else as default.

Will machine it today.


Pablo
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  #29  
Old Sat 30 July 2011, 05:08
KenC
Just call me: Ken
 
Klang
Malaysia
Very nice stuff!
This is going to be fun but I some how can not get it to open any .jpg files with it. Can anyone show me how?
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  #30  
Old Sat 30 July 2011, 05:23
smreish
Just call me: Sean - #5, 28, 58 and others
 
Orlando, Florida
United States of America
...Must be popular. It the 1/2 tone imaging made the headlines on engadget.com today.
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