Sketch constraints in detail - 3D design for 3D printing pt10

To get the best out of 3D printing, it helps if you can design your own parts. In this tutorial series, we will learn to use a free 3D CAD program to do just that.

In this episode, I meet a frequent viewer request to cover sketch dimensions and constraints in more detail. We design a mainboard adaptor mount using a dimensioned diagram, then build a frame around it.

A future video is planned where I design a more complex part from start to finish to show all of the little problems and how to fix them.

0:00 Introduction

0:40 What we are designing

1:06 Basic mainboard sketch

2:32 Equal constraint

3:21 Applying diagram dimensions

4:30 Horizontal and Vertical constraints

5:46 Construction lines with Equal constraint

7:57 Basic frame sketch

8:16 Tangent constraint

8:47 Normal constraint

9:15 Concentric constraint

9:43 Coincident constraint

10:22 Midpoint constraint

10:43 Mirror tool

11:08 Symmetry constraint

11:26 Alternate use of coincident constraint

11:39 Parallel constraint

11:56 Coincident constraints beyond the current sketch

12:36 Pierce constraint

12:47 Perpendicular constraint

13:03 Final dimensions and trim tool

13:38 Over constrained geometry

14:32 Finished part

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[ggahm]

I've enjoyed this entire series, but I think this may be my favorite video. Demonstrating how to use the tools is an incredible reference for later on.

[JohnL_S]

This program is blowing my mind everytime I watch these videos! You are truly an amazing teacher!

[rfsbsb]

Great tutorial. I love the fact that you took the time to explain not only the most used ones, but all of them!

[alfaracer]

New teaching tech vid my week is instantly better

[stevewise]

I primarily use the Fusion 360 free version but this video applies to it as well. Your explanation of constraints was spot on and helped me to understand them better. Well done!

[Itsdirtnaptime]

Looking over that print, that is a bang up job. Center to center? Check. Edge to center of hole? 🤷‍♂️ Edge to center of hole? Check. Center to center? 🤷‍♂️ Two holes are close enough to suggest they are in line through the Y axis, yet they are probably 1 to 2 mm off from being in a straight line. But this is a good way to help people get the hint of prototyping. You can't expect to get your model right the first time, every time. Sometimes, you have to print and adjust dimensions.

[iteerrex]

I have a feeling there’s gona be much more bonus videos.

[mapsofbeing]

Been watching for about 2 years, but your onshape series stands out for me. I'd been looking to move up from meshmixer/tinkercad, so as soon as you mentioned it I started experimenting, watched all of your 3d design tutorials 2-3 times and i was inspired but still struggled to translate my vision into a design with that program
But those tutorials of yours kept reminding me how powerful the tool is, and I'm looking forward to master it, so I jumped back in last week and used it to design 3 more complex objects
I struggled with the basics but with persistence got the results I wanted. And now that I'm done with the rush, here comes the video to explain how I could have done it 10x more elegantly.
Thanks, I'm sure I'll watch it again, too!

[HugSeal]

Great series. Probably already been commented but if you don't want the automatic constraints to kick in when drawing a line you can use "shift" to disable it temporarily. That way you won't have to click elsewhere while sketching.

[Ben-qhku]

Great Michael! tanks for the tutorial.

[cachepat]

Yet another amazing collection of technics, coming together on a useful physical part. I love your unique to approach things; and you have likely saved me from a ton of unnecessary steps in my next project. Thank you

[nturner]

Thank you for this additional video on constraints!

[BenjaminSjavik]

Thank you for doing this video! Since you started your tutorial series I've made a number of designs and printed them for various needs around the house and my bicycle. I hadn't yet gotten the hang of constraints beyond coincident and dimension though, and now my designs will go much faster. Thanks!

[marceloesteniodeoliveira]

I'ts amazing to see your dedication, clarity, such a detailed and high quality content you've been provided to everyone. Your edit, attention to the minimal details and failures sharing give everyone hope. Congratulations for your work and a warm hug from Brazil :)

[TwinsCustomsCA]

Time saver and very good tutorial again

[deathcube]

Thank you for all this series of videos. You're an excellent teacher!

[dylanprice]

extremely helpful video to fill in some of the blanks i had thank you!

[gametec_live]

this video is awsm, im just going to send this to my friend who doesnt constrain anything (hes a monster)

[Yoggoth]

Good record, though it would be nice to see printed part fit in place perfectly.

[cachepat]

Thx the an instructive morning, learning efficient ways to engage constraints. 😂