All the svg files I designed for laser cutting have randomly all shrunk. Let’s say I designed a cut file to make a 60 mm diameter circle and when I now open the file it measures at 45 mm. I have no idea what happened. It’s happened with at least three of my files.
Does anyone know what caused this or how to fix it?
I am running version 1.0
This might be helpful:
Quick drive-by post, just in case it’s useful for anyone.
This is the base Inkscape template I put together for
designs. It’s (approximately) the entire work area, with guides for the cutting and engraving margins.
Download it here (right click, Save link as…):
Don’t try to upload this file to the Glowforge UI — it will just get confused. This file is purely for helping create designs …
I have been using this and have not had any issues.
It is pretty awesome and I am definitely going to use this in the future, thank you for sharing
However, I don’t think will help with my current problem
How sure are you about those dimensions?
They don’t quite sound like a DPI issue, but they’re not out of the question.
Are you estimating or was it exactly 60 to 45?
Open the template and try to copy your current SVG into it, to see what happens.
If it is off, it is likely that the original is already messed up by some other process.
Very sure, unfortunately. I have previously cut from the same files and when I measure those pieces I get 60 mm but now when I open the Inkscape file it measures 45.386 mm.
Let’s see. That’s about 25% shrinkage, which is nowhere near the 90-96 dpi conversion. I am afraid I don’t have an answer.
Are you familiar with the mathematical way to precisely resize things in inkscape? We can at least get it scaled properly back up.
You might also want to see if there are any reported bugs with 1.0 or text with a previous versionof inkscape to see if it reverts back.
I have already preformed that experiment. It’s actually how I figured out something was wrong. I nested my pieces on a new Inkscape file, cut it on my Glowforge and then realized the significant size difference.
If it was just one file, I would chalk it up to user error, but this has happened to multiple files that I haven’t open in months.
Have you tried closing inkscape, deleting or renaming your preferences file, and then restarting?
Inkscape will generate a new pristine prefs file. It would rule some things out.
I am not familiar with the mathematical way to precisely resize things in Inkscape. It sounds like you do though?
I will check for reported bugs, but this originally happened yesterday and I was still using 0.92.4 and just installed the up to 1.0 hoping that would fix the problem.
Preference file? Where would I find that?
What software do you have available? There’s an easy way to do it in inkscape, which can probably be done in illustrator etc.
Basically you measure the width of one of the slots.
Say it’s .125” and you want the slots to be 0.03” thinner.
Now select all.
Be sure the aspect ratio is locked (the padlock between the width and height)
Now change the width (or height) of the selection: add “*0.122/0.125”. This will resize your model so that your slots will now be 0.122”.
Make sense? Widths and…
It’s not that complicated by it is kind of hard to write.
Basically you import your pdf.
Measure one line/gap whatever you’re trying to scale to a known size. Let’s assume it’s a simple square that you know you want to be exactly 0.75” on a side.
You measure that square using the ruler tool and find that it’s actually 1.17”.
Ok great now you know what your scaling factor is.
Select everything. Be sure the aspect ratio lock icon is selected.
You’ll see a width and height that reflects the e…
Ah, here we go, the most thorough example:
It’s fairly simple using any vector editor. I’ll give the example using Inkscape. A quick note: There are a lot of words here, but in reality this process should literally only take about a minute to do the scaling, then however much time you take to do any manual adjustments (described below) is up to you.
First, measure your material and decide how thick you want your slots to be. Let’s assume our theoretical new material is 2mm thick. You’ll need to kerf adjust the cut line,…
Open a file explorer window and go to:
You’ll find preferences.xml. Rename it and start inkscape back up.
As for resizing: In your specific case you mentioned, you’d select all and then lock the aspect ratio, and add *
60/45.386 to either the X or Y size.
Your 45.386 pieces will now be 60.
I tried renaming the preference.xml file, but that didn’t fix the problem.
However, I tried the resizing method you brought to my attention and that works at the very least.
I truly appreciate all this help, I cannot thank you enough. You have turned my frustration and fear of re-doing all my files into a simple resizing process. Again, thank you.
No worries. That resizing method is really handy, glad it is of some use for you.
@eflyguy is pretty sneaky, maybe he as an idea about this resizing?
June 10, 2020, 4:58am
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