Connecting sketches using coincidence constraints

Tutorial series: Sketching fundamentals

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What you'll learn

Do you want endpoints to automatically adjust when a connected geometry is edited? Or make sketches symmetrical? Get tips for working with coincidence and symmetry constraints to set the relationship between sketch elements upfront and model more precisely.

Transcript

00:00

To bring this exercise to an end, I would like to finish with a few more tips about how to work with the grid and specifically the guide system. You see that the grid currently is turned off. I'm in Top View. Let's go to Sketch. The line command is turned on and I just draw a line. And I press Escape two times to exit the Sketch tool.

00:29

This point now, I would like to move vertically up and down, but you see it's not aligned to the grid. But look at these magenta lines. I can along these magenta lines, move this point vertically or horizontally. To extend or shorten this line, the same point, I simply move along the line's own direction to make it longer or shorter.

00:58

It's that easy. Let's add another line and escape, escape. And now this endpoint, I would like to be right where these two lines would intersect. I can extend this line, but I don't know where this would intersect with the other line. But take a look at this. I bring this to the endpoint.

01:27

And then wait a second, drag this out and there these two lines would intersect. And when I release the mouse button to that endpoint, a coincident constraint is being added. And that's actually very nice in Shapr3D. What this means now is when I move this point, you see the other line actually will follow to delete that constraint. We can simply select it and delete it.

01:57

Let's delete everything. I will go to the arc and create an arc. There we are. Then I create a line to here and press Escape and Escape. I would like this endpoint to snap onto kind of like the circle. This arc basically defines. So I can select this endpoint, move up.

02:27

Go to the circle and there it is. And release the mouse button. And here again, the same thing. If I zoom out a little bit, and for example, I change the point here, we see it runs through the end point of the line. If I move this, this drags the circle. If I drag the circle,

02:55

it's dragging then actually the line. So this is really very, very useful how this works in Shapr3D with the Constraint system. Let's take a look at how we can create patterns and symmetry. Both are very easy. Before we continue, I turned on the grid snapping actually. Let's go to the line command and I create a vertical line and press Escape.

03:24

then another line and escape, and a third line and escape and escape. So the center line, that's going to be our mirror or symmetry axis. So I turn this into a construction line and lock it so it can't move. These two points, I would like to be symmetrical to each other. So I select them, go to symmetry, and then I select the axis. And you see now when I move this,

03:53

these two points are in sync. We can do the same with the other two points. And now also those are in sync. Because all the points are symmetrical, that also means these two lines are equal in length.

 

About the instructor

Instructor-Claas-Kuhnen.png

Claas Kuhnen is a German 3D designer known for his strong interdisciplinary background in product, space, and animation design. He holds an undergraduate degree in Color Design for Interior and Product Design from the University of Applied Science and Art in Hildesheim, Germany. He further pursued his education and obtained a Masters in Fine Arts in 3D Studio Art with a focus on Jewelry Design and 3D Animation from Bowling Green State University.

As a designer, Claas Kuhnen is particularly interested in design-informed solutions and exploring the relationship between consumerism, products, and their impact on society. He engages in a wide range of projects, including furniture design, interior and exhibit design, consumer product design, and medical product design.

In his research and studio practice, Claas Kuhnen delves into the application of a modern multi-application and interdisciplinary workflow. His areas of investigation encompass parametric, generative, and subdivision surface modeling, as well as AR (Augmented Reality), VR (Virtual Reality), photogrammetry, and AI-powered tools. He collaborates with various national and international universities and companies on research and design projects, contributing his expertise and exploring innovative approaches.

Claas Kuhnen's design projects span diverse domains. For instance, he has designed exhibit artifacts for The Henry Ford Museum, developed medical devices for the Department of Pharmacy Practice, and undertaken interior design projects that serve the community. His work showcases a keen understanding of the intersections between design, technology, and societal impact.

In addition to his design practice, Claas Kuhnen is actively involved in teaching and sharing his knowledge with students. His classroom experience is strongly influenced by his diverse research background, providing students with a modern, interdisciplinary, and competitive education.

Furthermore, Claas Kuhnen's work and techniques have been featured in exhibitions such as Autodesk University, SIGGRAPH, SOFA, and SNAG. He actively engages in educational collaboration efforts with both national and international universities and serves as a Matter Expert for leading design software companies, contributing to the advancement of design tools and methodologies.

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