FreeCAD: Finally Understand OXY, OXZ attachment!
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- Опубликовано: 25 авг 2024
- One of the more tricky FreeCAD attachment modes to understand but very powerful, the align modes of OXY, OXZ allow for a aketch or object to be aligned for two or three references. I give you a simple beginner friendly explanation of how this work you basic sketcher geometry. Later we will continue using this attachment mode in a learning freecad for beginners episode to see one example of what it can be used for.
#freecad , #CAD , #3DPrinting
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00:00 Intro
01:20 Sketching BaseSketch
03:45 Sketching SketchToAttach (axes)
05:14 Labeling vertices
07:28 Attachment mode examples with two references
11:28 Attachment mode examples with three references
13:53 Moving vertices to reorient sketch
15:14 Outro
Great tutorial with lots of examples, love it. I won't be fumbling through these attachment modes any more!
So greatful for this 😊
You make valuable films, thank you from Poland. I watch all your videos
@@MangoJellySolutions You're very welcome! It's partly selfish too: staying on top of timestamps is good motivation to catch every tutorial even if I feel like I already grasp the concept pretty well. No matter how basic the topic is, though, you always manage to teach me something!
Thank You, this was so enlightening.
Nothing better than coming home after a long day to some free cad videos and drinking a beverage
So glad I'm not the only one that does this, thank you for choosing my videos😀😀
Oh my god this changes EVERYTHING. I haven't bothered with these so far, and instead mucked around with creating datum planes to get the angle, and then used offsets to go from there... this will make stuff SO MUCH EASIER!!!
I cannot thank you enough for this content. Have you ever considered sorting these into some sort of structured course and making it available on Udemy, Coursera or the like?
So glad it's helped you out. There is so much to freecad that you will find your learning everyday. Well that's the same with most cad packages. I am looking to make some more structured course with 0.21 along with a book is just finding that time to sit down and plan. I already have a number of lessoned planed it's finding a theme to keep everything interesting
Look forward to it D.arren@@MangoJellySolutions
Excellent video as always. I can't tell you how much I've learned from binge watching your videos. So useful!
This (IMHO) is where software like FreeCAD fails. It is THEY who should produce videos of this standard to bring more users on board and hence garner donations and interest. If people can't understand it or see the potential via demonstration they just wander away. Luckily there's a hero in our town. His name? MangoJelly.
Thank you so much. Maybe I should buy myself a cape... I can see a new avatar picture in the making.
Ahhhh! More info for later? TMI for now.
Another good one 😊
Precious to understand why things work as they do.
THANKS!!
Glad you enjoyed it
Excellent Video. I have not worked with this type of attachment; however, your explanation made it very clear. Thanks for all the tutorials you post!
Glad it was helpful! Watch out for the next learning freecad video where we will be using this attachment mode.
Excellent share, as usual... Removing the mystery, you are.
Excellent tutorial. Much thanks.
great! Thank you so much for this. Now it's finally clear and indeed, it's easy.
I just wish I knew what I learned... how and where exactly would I use this... I'm very new to this and well don't know anything... I need to know where/how this would be used in real life for me to better understand... you did a great job showing explaining what you were doing I just don't follow application... maybe I'm premature in my comments because you said this is first in a series... thank you for doing these video I really appreciate all the help I can get.
You will use this particular skill (orientation in space and orientation of bodies to space) later when you model a more complex project that will consist of several bodies.
Many projects are so complex that they cannot be drawn in one body, for example due to the location of individual project blocks in 3D space. An example can be an engine, where the engine piston is turned in space against the crankshaft, both bodies are cylinders, but in space they are perpendicular to each other in the longitudinal axis...
So, such a project is drawn from several separate bodies, in the example of an engine, e.g. piston body, connecting rod body, crankshaft body... Then the bodies are assembled into a model! And during this assembly, the bodies must be arranged so that they are properly stored in the space!
It is at this moment that you will use this skill most often!
Then there is the model animation where the model moves. And here you will come across this skill again, as the inclinations of the axes and thus the inclinations of the bodies change with movement... (the connecting rod of the piston performs a circular movement in the lower part (in two axes) and in the upper part it performs a direct movement (in a single axis))
For 3D modeling, this skill is essential! Likewise for 3D printing or 3D milling...
Start to draw something in Sketcher workbench then extrude it in Part Design workbench to form a piece and add a hole for example in a exquisite incidence angle. This explanation is to help you reaching the desired result.
3D world is different from 2D one.
So, you need to have these concepts in your mind, that's why this video is so important...
As a newbie you've got a lot to learn on FreeCAD.
Just go step by step with simple models at first.
I suggest you searching the course for beginners in this same channel.
For that follow this link: ruclips.net/video/NXN7TOg3kj4/видео.html
The contents of this video is quiet away from your stage for now.
Don't worry it's a fascinating puzzle at the end.
Thank you for such a detailed comment and the examples within.
In the next learning freecad video we will build on this. I know some examples have already been given but I see the picture in your avatar is a plane. So you could use this technique within the surface workbench to make a cockpit window that bubbles outwards, using the top view downwards sketch the shape of the cockpit, the top profile. Then add arcs that are aligned via the technique, then surface between them. Adjusting the radius of the arcs controls the ?bubbleness? of the cockpit.
The only criticism I can offer is sometimes You move along a bit too quickly (could just be Me). Pls check if I've got this Right, Based on the Selection of Vertex's and Type of Attachment You can position the Sketch Object in any number of Orientations (To Position it where You want it??)? Figured out Right Click, Attachment Editor is a Quick Nav from The Tree. I'm Reckon I'll need to revise this to get it to sink in. I'm not very good at 3D Lateral thinking. I suppose what You are doing is Positioning a 2D Sketch Object in 3D Space (The Attachment references).
Sorry for that, I must remember with the more theory sided videos to slow down as normally the modelling process helps me keep the pace. I always take constructive criticism on board and it's how I have become better at supplying people what they want so big thank you. So with your qusetion yes that it correct. I find if you sketch a L shape sketch along with another so you have them pointing along the different axes you can experiment with the attachment methods. I don't know if I used that in this video, it's been a while, if not then I must make another as that would be a good way to explain it.
Thank you very much for this video!
It opened my eyes and took me a galaxy further in using FreeCad!
Until now, I have only groped in the dark of the unconscious in these settings and worked from a lack of understanding by trial and error. I finally know what os normal is. It is mentioned in every document, but no one in those documents described that it is an axis that we cannot see in 2D space... for example. Also the chosen three point method is great to understand…
Thank you once again!
Hahahahaha - "Until now, I have only groped in the dark of the unconscious in these settings" - that is EXACTLY my situation as well !!! I have been using FreeCad for over 2 years now and I believe this is the ONLY video that has bothered to dig into these sketch attachment concepts in such a way as to explain them properly. This really needs to be put into text and added into the FreeCad documentation. It really puts your ability to the next level when you understand it and start to use it in daily modeling. This channel is truely a heaven-sent gift to all of us 🙂
For some reason my previous moment didn't post so apologies if you get this twice. I am so glad that it's helped make things a lot clearer. I had a realisation moment when I was teaching this to someone that they has been no real explanation that explains it clearly. Also I try to explain certain 'CAD speak' as I know most people are dropping in for a video rather than watching full series so I try to cater for that. Really glad you and other are finding these useful.
Thank you so much for the kind comment. I have taken a lot of time trying to figure out where information is lacking with FreeCAD and it's one of the places that I felt that need more explanation, as you said, information like this takes learning to the next level. You be glad to know that I do have this documented in writing and will at some point be updating wiki's :)
@@MangoJellySolutions Awesome ! This particular subject has been a large gaping hole in the documentation for some time and it will be great to finally have it flushed out. Thanks again for all your efforts. Very much looking forward to more of this material on your channel when you are able to serve it up 😉
Hello from California again. I am having issues with champers disappearing from my drawings once I export them to flash print for my Adventure 3 light flashforge printer, any ideas? Thanks again for the tip on A2Plus, it works great.
I think this is a question for the FreeCad forum, subpage
Help on using FreeCAD...
It sounds like you are using a part design workflow but not exporting the last feature in the tree view, the tip or clicking on the main body to export. Or a part workflow and you are not selecting the correct object. When you select a feature or object it will export out what you have selected.
@MangoJelly Solutions Thank again For your help I really appreciate it. I'll double check to make sure I'm exporting it correctly, I did print what I had been drawing that I was having the trouble with and it in fact printed the champers. They didn't come out quite as I expected they were a little jagged. However I believe I've really been using the thickness tool incorrectly because it's Subtracting the material in the drawing but parts are still coming out a solid when I print them. I think I just need to watch more of your videos.
And apologies for not getting back to you sooner I've been rather busy out of town.
I discovered a well-known problem with the naming of elements of the body of the drawing, and I think it would be appropriate to show it in the instructional video.
I had drawn a guiding skeleton in sketcher for the movement of other bodies of the design. I was putting LCS into this skeleton (now learned, thanks again). However, even when I had the LCS attached properly, some LCSs would rotate at certain angles. I found that the LCS are OK, but the names of the elements to which the LCS is attached are changing. In short, if you e.g. two connected line segments exchange places in the Z axis (up / down), so they also exchange names. I assume it happens in the other axes as well.
I had to separate the segments from each other. I complicatedly made the separated line segments move as if they were connected to the original line segment. Only then did my LCS stop spinning.
When a beginner experiences this for the first time, he is so frustrated that the computer or the screen is in physical danger... If he at least suspects that such a problem is occurring, he can deal with it much faster...