Image Sampler

hello,
I'm new to Grasshopper.
I want to cut a board 30 cm / 40 cm with a laser machine.
I would use Image Sampler operation.

I would like to limit cutting holes with 5 mm max.
The space between the holes 2 mm minimum.
42 holes max on the 30 cm and 75 to 40 cm.
Cancels less than a 2 mm hole.

Thank you for telling me to program parameters.

Attachments:

van_Gogh_self_portrait.jpg, 252 KB

Replies to This Discussion

Permalink Reply by djordje on December 15, 2012 at 11:55am

Hi,

This is the result, but I it does not look good.

It seems number of holes needs to be larger.

Take a look:

Btw you can not set 75 points in the Y direction as it is a approximately 70% increase in the number of holes in comparison with X direction. And Y is larger than X only by one fourth of it's size.

Attachments:

vangogh.gh, 922 KB
vangogh5.jpg, 287 KB

Permalink Reply by Yann Guinchan on December 15, 2012 at 4:13pm

Thank you Djordje,

It's cool, it should work but I can not open the file.
I post these two then nothing.

Permalink Reply by djordje on December 15, 2012 at 5:51pm

You are probably using older Grasshopper version than me.
Download the newest one from here (for Rhino 4) or the newest one for Rhino 5 (from here).

After you open the definition you will have to set the new path to the Image sampler photo path. Download the vangogh5.jpg file too, and save it on let's say Desktop.

Then in grasshopper definition vangogh.gh double click on Image sampler (step 1) and then change the photo path to Desktop/vangogh.jpg (step 2):

Change "Run definition" Boolean toggle to "True".

That' all.

Use "Small objects - Milimeters" as Rhino template file.

Permalink Reply by Yann Guinchan on December 16, 2012 at 4:45am

thank

Permalink Reply by djordje on December 16, 2012 at 5:00am

I would be grateful, if you would post a screenshots of the results of laser cutting in here.
Thank you.

Permalink Reply by djordje on August 17, 2014 at 9:41am

Hi Yann,

Have you ever succeeded in cutting this board?
If yes, would you be so kind to post some photos of it, please?
Thank you.

Permalink Reply by Yann Guinchan on August 21, 2014 at 2:32am

I improves the scribe.
laser cutting.
Now you have to choose a good picture

Attachments:

hold pitchure.gh, 1 MB
hold.png, 2.4 MB

Permalink Reply by djordje on August 21, 2014 at 2:38am

Hi Yann,

I do not understand. I thought you cut the Van Gogh portrait?

Permalink Reply by Yann Guinchan on August 21, 2014 at 3:12am

I do not,
Van Gogh is a sample image.
what I wanted is to create a system for simulating and if results are concluded to make the cut.
All the images are not good. contrasts should be well.
this scribe, simply change the image, then adjusts the pixel.
then if the kerf is smaller may have reduced overall dimension.
then define the maximum diameter minium appropriate.

Permalink Reply by Artur Jorge Rocha Martins Branco on October 21, 2014 at 2:09am

Hello Yann Guinchan:

I am trying to do the same operation as you but with 3 diferent sized holes (6, 8, 10, 12 mm)
Also using information from the image sampler I would like to laser engrave some boards.
If someone as some advice or input about this, it would be very welcome.

Thanks in advance.

RSS