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Tracing JPG Help - Inkscape Difference Tool

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HCmillertech
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Tracing JPG Help - Inkscape Difference Tool

Post by HCmillertech » Tue Sep 20, 2022 6:45 pm

I have a logo I trace to bitmap and get that good. However I want to cut it out of a 20" piece of steel. When I drag it on top of the steel I can not get it to do a difference.
I know I am missing a step, I do this with address plates. When I drag the text over the square I can get it correct. But for some reason I can not get this one.
Thanks.

HCmillertech
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Re: JPG Help

Post by HCmillertech » Tue Sep 20, 2022 6:47 pm

Here is the file.
Logo.svg

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Re: JPG Help

Post by adbuch » Tue Sep 20, 2022 8:38 pm

Are you after something like this?
sign.jpg

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HCmillertech
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Re: JPG Help

Post by HCmillertech » Tue Sep 20, 2022 9:42 pm

yes exactly. What am I doing wrong?

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Re: JPG Help

Post by adbuch » Wed Sep 21, 2022 3:37 am

For plasma cutting I don't think you need to worry about using the difference tool here. There may be more fancy ways to do this, but this is how I would do it starting from your original image. I messed around with your provided file and did get the result shown in my first reply. But I really don't remember exactly what I did to arrive at that result.

I will assume that you started with a bitmap image like this.
sign 1.jpg
When you import this to Inkscape and Path, Trace Bitmap you should see something like this.
sign 2.jpg

You can delete the original bitmap image, and then draw a rectangle around the logo and letters.
sign 3.jpg
Select letters/logo and rectangle, then Path, Combine.
sign 4.jpg
sign 5.jpg
Save as svg or dxf for opening with Sheetcam or similar for creating cut paths and cutting.
I have saved as dxf and opened with Design Edge to check the file.
sign 6.jpg

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Re: JPG Help

Post by adbuch » Wed Sep 21, 2022 3:51 am

You can use the Difference tool to stencil the letters. Here it is with the letters stenciled and red fill added.
David
sign 7.jpg

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Re: JPG Help

Post by adbuch » Wed Sep 21, 2022 5:09 am

I was able to recreate the edit I did previously on the original Logo.svg file you provided.
I showed the first step and last step in the attached screen shots.

You can see the entire process (20 screen shots) by clicking on the the link below.
https://photos.app.goo.gl/Vo9n6rh9cbAURrnD7

David


I started here.
logo 1.jpg

And ended here.
logo 19.jpg

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HCmillertech
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Re: JPG Help

Post by HCmillertech » Wed Sep 21, 2022 8:50 am

Thank you so much.

Is there a way I can save the document you made of the 20 screen shots?

Also can you attach the final file you created?

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Re: JPG Help

Post by TJS » Wed Sep 21, 2022 9:04 am

Maybe I am missing something. Are the strings going to fall out. Albeit, I did not open the SVG in inkscape yet. It might be because when I look at it the fill is thowing me off. I usually do a View ===> Outline.

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Re: JPG Help

Post by acourtjester » Wed Sep 21, 2022 9:40 am

HC you can save this post ( or other web sites) by clicking on and highlighting the URL (web address) and clicking on the copy feature (Ctrl C).
Then go to where you want to save it, can be the desktop of in a folder on your system. Do a right click and the menu will appear as shown. Next paste the URL you saved into the place shown. Click on enter and on the new screen fill in the name you want to use for it. Any time you want to look at it go to the location you placed it in and click on the shortcut, it will open it. This is what the shortcut will look like where you saved it to (desktop or in a folder).
A ps 1.jpg
a ps 2.jpg
a ps 3.jpg
a ps 4.JPG
a ps 5.JPG
a ps 6.JPG

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Re: JPG Help

Post by adbuch » Wed Sep 21, 2022 9:50 am

HCmillertech wrote:
Wed Sep 21, 2022 8:50 am
Thank you so much.

Is there a way I can save the document you made of the 20 screen shots?

Also can you attach the final file you created?
Just download the google slideshow into a folder on your computer.
David

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Re: JPG Help

Post by adbuch » Wed Sep 21, 2022 9:59 am

TJS wrote:
Wed Sep 21, 2022 9:04 am
Maybe I am missing something. Are the strings going to fall out. Albeit, I did not open the SVG in inkscape yet. It might be because when I look at it the fill is thowing me off. I usually do a View ===> Outline.
You can get a better idea with this view.
strings.jpg
Here it is in outline view.
strings 1.jpg

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Re: JPG Help

Post by adbuch » Wed Sep 21, 2022 10:03 am

acourtjester wrote:
Wed Sep 21, 2022 9:40 am
HC you can save this post ( or other web sites) by clicking on and highlighting the URL (web address) and clicking on the copy feature (Ctrl C).
Then go to where you want to save it, can be the desktop of in a folder on your system. Do a right click and the menu will appear as shown. Next paste the URL you saved into the place shown. Click on enter and on the new screen fill in the name you want to use for it. Any time you want to look at it go to the location you placed it in and click on the shortcut, it will open it. This is what the shortcut will look like where you saved it to (desktop or in a folder).
A ps 1.jpg
a ps 2.jpg
a ps 3.jpg
a ps 4.JPG
a ps 5.JPG
a ps 6.JPG
Tom,
I created a Google slide show, so that is different than copy from this site. The images can be downloaded. The file will be compressed.
Here is the file. I did this because it was much quicker and more efficient that posting all the screen shots here.
David
Logo editing with Inkscape.zip

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Re: JPG Help

Post by acourtjester » Wed Sep 21, 2022 10:07 am

Good show both will work to save info or tutorials for viewing later. I have used this method for YouTube videos, take less disc storage then the files if saved like a recording. Or using the google drive for the actual recording or file storage. :Like
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Re: JPG Help

Post by adbuch » Wed Sep 21, 2022 10:13 am

HCmillertech wrote:
Wed Sep 21, 2022 8:50 am
Thank you so much.

Is there a way I can save the document you made of the 20 screen shots?

Also can you attach the final file you created?
HCmillertech - I want to give you and others a chance to learn about Inkscape. This is a good learning example. Once you have attempted to edit this on your own, then post your results and we will take a look. It if often counterproductive to show the "answer" before the "students" have a chance to work the examples on their own.

David

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Re: JPG Help

Post by adbuch » Wed Sep 21, 2022 10:19 am

acourtjester wrote:
Wed Sep 21, 2022 10:07 am
Good show both will work to save info or tutorials for viewing later. I have used this method for YouTube videos, take less disc storage then the files if saved like a recording. Or using the google drive for the actual recording or file storage. :Like
Tom - maybe I am missing something here. When I click on the link, it immediately opens the google page. What am I doing wrong?
Thanks,
David
strings 2.jpg

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Re: Tracing JPG Help - Inkscape Difference Tool

Post by adbuch » Wed Sep 21, 2022 10:41 am

Tom - I figured out what you mean. Right click and save as bookmark. Well done.
David
bookmark link.jpg

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Re: Tracing JPG Help - Inkscape Difference Tool

Post by acourtjester » Wed Sep 21, 2022 2:54 pm

I am still using Win 7 somethings are different :HaHa :HaHa
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HCmillertech
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Re: Tracing JPG Help - Inkscape Difference Tool

Post by HCmillertech » Wed Sep 21, 2022 5:52 pm

adbuch

I did everything but when i go to move the logo over the rectangle I can not see the logo. I have attached the file. I tried a difference anyway and both disappeared so I am missing something.

Thanks for your help.

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Re: Tracing JPG Help - Inkscape Difference Tool

Post by adbuch » Thu Sep 22, 2022 3:12 am

HCmillertech wrote:
Wed Sep 21, 2022 5:52 pm
adbuch

I did everything but when i go to move the logo over the rectangle I can not see the logo. I have attached the file. I tried a difference anyway and both disappeared so I am missing something.

Thanks for your help.
When you move the logo over to the rectangle it may be underneath the rectangle.

raise to top 1.jpg
raise to top 2.jpg

I used Path, Combine for the last step.
raise to top 3.jpg
raise to top 4.jpg

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Re: Tracing JPG Help - Inkscape Difference Tool

Post by adbuch » Thu Sep 22, 2022 3:54 am

If you are only plasma cutting, then you can work in outline view and simply draw a rectangle around your logo from the auto trace, select both the rectangle and logo and then Path, Combine. Then save as dxf or svg cutting. Note that you will need to do the auto trace in normal view mode. Then you can just delete your original image and switch to outline view for the remainder of the steps.
David
Logo1 outline view 1.jpg
Logo1 outline view 2.jpg

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Re: Tracing JPG Help - Inkscape Difference Tool

Post by TJS » Thu Sep 22, 2022 7:08 am

Thanks for this David. I work in outline view most of the time.
T.J.

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Re: Tracing JPG Help - Inkscape Difference Tool

Post by adbuch » Thu Sep 22, 2022 8:19 am

TJS wrote:
Thu Sep 22, 2022 7:08 am
Thanks for this David. I work in outline view most of the time.
T.J.
You are welcome TJ. Here is a quicker way to do it in normal view using auto trace (Path, Trace Bitmap).
David
Logo 1.jpg
Logo 2.jpg
Logo 3.jpg
Logo 4.jpg
Logo 5.jpg

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Re: Tracing JPG Help - Inkscape Difference Tool

Post by Nzniceguy » Thu Sep 22, 2022 10:17 am

What is the difference please in Path Union and Path Combine? eg when would you use one rather than the other?

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Re: Tracing JPG Help - Inkscape Difference Tool

Post by adbuch » Fri Sep 23, 2022 1:46 am

Nzniceguy wrote:
Thu Sep 22, 2022 10:17 am
What is the difference please in Path Union and Path Combine? eg when would you use one rather than the other?
"Combine makes 2 or more paths into a compound path with 2 or more subpaths. This means that they all share the same style (color, opacity, stroke width, etc.). The paths may be open or closed."
combine 1.jpg
combine 2.jpg

"Union typically results in one closed path, although not always. Like most of the path operations, it works on areas. It takes the area inside one closed path and the area inside another closed path and puts them together, resulting in one closed path."
combine 3.jpg
combine 4.jpg

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