I’m trying to make some very precise acrylic rings 3" in outer diameter and 2.55" inner diameter. The ones I made in Glowforge are spot on without messing with figuring out the kerf for this. The Inkscape circles are one unit but I can see what the outer diameter is and it’s 2.995"
I would just make these in Glowforge but there isn’t an auto center two elements in the Glowforge software is there?
Any ideas what is happening here? Is it stroke or line diameter related in Inkscape?
Glowforge does not auto kerf correct if that is your question.
As for aligning, inkscape has a great suite of alignment and arranging tools.
You should understand the difference between bounding box options in Inkscape, look in your preferences for “visual” versus “geometric” bounding boxes.
As for aligning in the UI, you can do it with a little work in the precision placement to get things aligned with simple shapes like circles.
If this doesn’t answer your question, maybe a rephrasing would help us help you figure it out.
In the screen shot the x and y give you the coordinates of the center of the circle. The circle has a diameter of 2.732 inch. If you create another circle, say 2.532 inches and change the x and y coordinates to match the first one, they are centered. Now its merely a function of selecting them both and placing in your desired location.
One thing I noticed was when I made the initial circle it asks for a W and H and I put 1.5" and 1.5" it generates a 3.006" diameter circle. Changing that to a flat 3" imports it smaller into Glowforge, however keeping it at 3.006" imports it into Glowforge at a flat 3". I’ve been changing that and getting smaller circles. The SVG has both circles in the file.
A workaround seems to be to let Inkscape do it’s thing but it’s frustrating not understanding how or why.
It’s a really common issue with people who are new to inkscape, it catches almost everybody. If you find yourself with the time, go through all of the tutorials you can find because there are lots of other hidden gems.