FreeCAD 0.19 - Part Design Tutorial - Slotted hole on a pipe (English)
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- Опубликовано: 3 июл 2024
- How to create a slotted hole (slot) on the lateral surface of a pipe or a cylinder in FreeCAD 0.19? I'll show you in this tutorial
Maybe you're used to drawing slotted holes in FreeCAD's sketcher and create slots on flat surfaces like a plate or a cube. But how can you do this and create a nice groove around a pipe where both drills are still perpendicular to the cylinder's lateral surface?
I'm using a simple pocket and a polar pattern to revolve this hole around my pipe and a groove to remove the material between the two holes.
What do you think about it?
I am always happy for feedback and I am always willing to improve both my CAD skills and my English tutoring skills as well.
You find the German 'original' version of this tutorial on my German channel 'flowwie's corner' here:
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CAD expert with over 11 years of experience in various CAD systems such as Siemens NX, Siemens Solid Edge, Catia V5, Onshape, FreeCAD and Fusion 360.
Former lecturer for basic CAD training in the engineering program of the Department of Environmental Planning/ Environmental Engineering at Trier University of Applied Sciences.
You can find my main channel (in German language) here:
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feel free to comment, ask questions, share and whatever you like.
#freecad #partdesign #tutorial #CAD 
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Do not worry about your English it comes across better than some English express themselves. The video's that you make are excellent tutorials. Thank you.
I am new to FreeCAD. This is the second tutorial of yours I have watched. You do an exceptional job of explaining you actions, and reasons for them. Please keep making English versions. You appologise for you English, because it is not your first language, but you explain yourself better than some native English speakers I have dealt with.
Excellent lesson. Your English skill is surpassed only by your sense of humor.
Thank you so much - this is a very kind comment! :)
Well done "und danke" from one of you English speaking followers.
This is the first profescional video on freecad find an RUclips , very good job
This is really nice. Thank you very much. I'm trying my best to improve my English channel.
I wish my German was as good as your English! Great tutorial, thanks.
Thank you so much for this. I very much appreciate you making English versions. The knowledge of using expressions is priceless.
Good tutorial! Please keep making english ones!!
I will focus more on my English content now! Thank you for the feedback!
Best tutorial. I love your tutorial because you are carefull about parameters, which is essential for cad (not polygon) design. Please make more video like this. Best wishes for you.
Your English sounds fine with this American. Your FreeCAD teaching is right on target. I am new to FreeCAD and the info you give in this tutorial will be very useful for me. THANKS!
As for a Russian your English is absolutely clear to me! I can say even more, I like listening to you. I have to read comments now, I am sure, there are native speakers, who find your English better then theirs ;-) Best regards from Russia and thank you.
Dmitri, thank you very much for your comment and for checking out my videos! Best regards from Germany to Russia! 🇷🇺 👍
TY Flowie 4 all your diligence.
The English speaking is excellent..Continue Exactly as you are doing.
U R AN Excellent Instructor. The information U disseminate can be instantly understood.
Do not hesitate to show all the techniques and complicated designs and calculations you have produced.
Ausgezeichnet! Deiner English ist viel besser als meiner Deutsch😇
Oh really? Thanks a lot !
Just started with FreeCAD and I am glad I found your channel. Your videos are well presented. Much appreciation.
Very well explained. Don't worry about your english, it is better than my German.
Hey thanks for this nice comment! I think my English is improving fast when I get used to these tutorials! :) written English is absolutely no problem, it’s just that I an not used to free talking..
Thanks, didn't know how to make a hole on a curved surface. Now i do.
Thanks for all your videos. And your English is excellent, no reason to apologise for it....im Gegensatz zu meinem Deutsch, das wirklich eine Entschuldigung verdient.
Thank you sir for the tips and techniques of controlling model through expressions.please do more videos so that we learn more by your videos
Well done, perfect English and easy to understand !
More please. Clear concise, detailed and easy to follow. Can’t wait until you have translated your other lessons. Thanks.
What more can I say, Great, thank you.
And for a French, your English is perfect.
You're good at this!! More english videos please!!!
Thanks
flowwies corner EN. Your tutorials are very clear and useful
Thank you Florian for making this tutorial in English. I didn't know one could reference named constraints like that, which seems very nifty. A similar approach which might be better in some cases is to use a spreadsheet. It allows grouping all such named variables making it easier to get an overview of all parameters. To do so one would add a spreadsheet to the project, and add values in a cell with an assigned alias. The aliases can then be referenced as with the named constraints with e.g. "Spreadsheet.wt". This can allow for more complex relations where for example the value of once cell could be the evaluation of a function.
Nice tip, I'll be sure to check that out soon.
Very good. The dynamic constraints functionality is awesome. Thanks for making this for people to follow
Thanks, good tutorial and nice that you explained as you went along. I find tutorials with just music or captions much harder to follow. 😀👍
Really informative and clearly presented. Give a good insight into the power of using expressions in a parametric design, which I am sure could save a lot of time in a number of different scenarios. Thank you very much!
Thank you very much Sir. I appreciate you sharing the knowledge of free CAD. I can now finish making a dice tray and tower. Thank you!
You're doing a great job!
Excellent tutorial my friend. Very clear and accurate. I love the way you circonvene the topology problem. Very smart. I adopt this smart approach from now on.
I've just started using FreeCAD within the last month and your tutorials have been the best structured that I have come across. Please keep up the great work. I've been following the non-English also as the RUclips auto CC does a pretty good job of auto capturing and displaying with a bit of error in some words. Things like FreeCAD getting transcribed as Freak and other small things.
It's a bit slower following but that works out great and gets me to focus better.
I truly appreciate the teachings and proper methods of approach instead of the shotgun method most other tutorials seem to present.
Your English is superb so no need to worry.
I really like the series of examples that you supply giving users the opportunity to learn to do it on their own and then follow up with seeing a professional approach as to how to get it completed. Also, highlighting reinforcing the trouble areas that FreeCAD has is very nice (e.g. Topological Naming issues, etc.). I was not aware of the issue until you mentioned it in this video. That is how new I am to the system.
Keep up the marvelous work.
Your accent and English are very good. These tutorials are useful.
congratulations on your wonderful tutorials!
Thank you. It is always nice to learn better techniques. This was very well explained.
Thanks a lot. I really appreciate the feedback. :)
Great video, English is great. Very helpful to show how to avoid using topological naming
Well done! (and your English is great).
Very good tutorial. Thank you very much.
Excellent!! very easy to follow. SUBSCRIBED!!
Wow. Just started watching your vids and straight away I realise that u r teaching things the hard way. Why wouldnt you draw 2 circles on the XY centre point, give them radius and simply pad for initial pipe
Another great video, thanks!
Nice, thank you. I am also keen on German tutorials
Thanks, I already use solidworks so this more advanced tutorial help me to undestand the flow in Freecad.
Thank you!
Very nice!
Thank you for the excellent video.
you're very welcome, Sir!
Nice video, thanks for doing it in English.
Thank you! I’m trying to bring as much content as possible to my International community as well! 👍
thanks for this tutorial
Thank you. Good tutorial.
Awesome tutorial dude. Your English (including your variable names) are the absolute bees-knees.
One development to this would be to link the parameters into a spreadsheet for even easier control.
More tuts in English please : )
I would love to see a tutorial with a hollow tube and hollow dome at one end . ) your English is better then most native English speaking people I know here in Canada ! cheers.
thank you for the video. I created the pipe on an alternative way, two concentric circles. The thickness wall for the cross reference between 1st sketch and the rectangle did it creating a construction line between both circles and taking the measure as reference. Quite nice tips you are giving, I am learning a lot and I have stopped using external geometries or creating sketches on faces following the robustness hierarchy to tight and controll all the model. 1. coordinate systems 2. planes 3. faces 4. edges
Thanks for your tutorias. To manage easily all variables, there is something that works for me. Add all variables into a spreadsheet and assign a variable. After, when drawing, you select spreadsheet and the list of variable will pop up. This way you can refer to any variable from different sketches. Hope this helps.
Super! thanks for help. This is best tut.
Thank you nice tutorial
Very good teaching method, I will inspire myself with your method to create my next parts. don't worry with your English, it's perfect for me (I am French) and mainly watch US videos (plenty of those ;) )
Amazing!
Nice tutorial
Thank you!
Please keep making english ones.Best regards from Poland
My friend, as a software developer, I've learned to make your variable names things that make sense to you. Instead of "dd" for "drilling diameter" just use "drilling_diameter" or "drill_dia". Use lots of letters; they're free, so why not use as many as you need to make sense!
Excellent!
Thanks a lot, Ben!!
@@FreeCADAcademy I am trying to learn freecad and I have to say this is the clearest and best Paced tutorials I have found. I need to have go
Awesome. Thx!
Thanks!
@@FreeCADAcademy You're most welcome. I learned a lot.
In this video and others by different authors you talk about the dangers of the FreeCAD naming hierarchy - or something like that. I think it has to do with not using the 'link to edge' functionality.
Any chance you could make something on that topic?
I've used link to edge *a lot* and have often found myself frustrated with FreeCAD somehow 'getting it wrong' further through a models development - especially if I have to use undo. I'm wondering if this is why you and other contributors advise against it.
Thank you!
Very usefull!, every day i like more Freecad (and i use less Fusion)
Thanks for the tutorial! It'll be super nice if the "Formula editor" has a fuzzy search functionality, then we don't need to remember the exact variable names~
Great tutorial! I’m a beginner to Freecad 19 so I will try to catch up. I’m wondering why you didn’t use the spreadsheet for the parametric naming.
As a English speaking American I think your English is perfect, I am curious about that dd for drilling distance what would you have said in German for that same thing and please explain in english so I understand or German as I can use Google Translate for the answer. Thanks for all you do.
You could use the Spreadsheet tool to store the dimensions.
Nice work or in German Schöne Arbeit ;O)
Vielen Dank !
Thank you for this. Is it possible to create a fillet or rounded end on a pipe/hollow cylinder?
I am using the latest version of freecad and it took me an hour and I still could not get it to aknowlage the " ir nor the wt" it just will not. :( so I thout maybe I did something wrong from start, so I start everything from start and same problem so I just give it up for now. But I love your work and I am Grateful for the video's that you make...:)
Nice tutorial.
What color did you choose in this pipe?
Greetings from Brazil.
Als englischsprachiger Amerikaner denke ich, dass Ihr Englisch perfekt ist. Ich bin neugierig auf diesen dd für die Bohrstrecke, was Sie für dieselbe Sache auf Deutsch gesagt hätten, und bitte erklären Sie auf Englisch, damit ich oder Deutsch verstehe, da ich Google Translate für das verwenden kann Antworten. Danke für alles was du tust
hi i dont see the constrain when i type it in the formula box and it said invalid ??
Did you use the correct Freecad version? The changed the syntax pretty much between 0.18 and 0.19 !
Best regards
Thanks for your very precise tutorial. Do you have a reason for not using the spreadsheet for your parameters?
No specific reason, Spreadsheet Workbench was just not part of the things I wanted to explain here. If you have to deal with a lot of parameters, spreadsheet is of course the better option.
It's the common problem: You cannot show everything i a 10 minutes tutorial without further explanation, and suddenly you find yourself recording some 50 minute tutorial.. :)
Okay, I understand. Thanks
I tried doing this before watching the video and I think it should've worked. Instead of extruding the cylinder by rotating a rectangle sketch, I extruded a pair of concentric circles. Everything was just fine until I tried making the grove, at which point everything just kind of broke. The geometry was all messed up and no matter which rotation axis I used, reversed or not, symmetry or not, it just turned into garbage with random polygons sticking out and the circle holes becoming triangular. When I did this again after watching your video with the revolving rectangle to create the tube, the thing worked fine.
What is the issue? How do I avoid that?
How could you add a bigger diameter flange to 1 side of the cylinder .
ex fusion user here. how would you go about modelling a pipe with a radial slot that is not just straight around/ up/ a constant pitch helix (like the locking mechanism on a pen or the cam groove for rotating the bolt on a rifle)? is there something like a wrap sketch around cylinder tool?
When I try to make the grove from sketch002 I get "Linked shape object is empty". What am I missing? To add to the fun, if I reverse the order and do the slot first and then add the hole and array it works fine. I got a working model, but this is still frustrating.
I have followed your tutorial (which think is very good) exactly, but i get a different result. At 10.15 i can see the circle in your model, but i can not see it in mine. Can this be because you are on version 0.19 and i am on 0.18.4?
Hi great tutorial. I am using v0.19 the same as what you are using, yet I am not able to enter the formula like you do. Constraints are not recognised. I have found the only way around this is to enter the sizes into a spreadsheet as I progress, and then use those.
To use spreadsheets is a very good way and is even better than my fiddling around with formulas and stuff. :D
@@FreeCADAcademy A month on... Sorted!
I finally worked out why I was unable to use the formula. I discovered that when naming constraints, you can't use a space in the naming of a constraint. i.e "Slot Length" must be "SlotLength"
Guten Tag! Ich habe ein Frage. Ich habe schön die Version 0.18 auf Freecad. Aber ich möchte gern die 0.19. Wie kann man Freecad 0.19 installieren? Alles Gute und vielen dank für die Tutos.
Hello! You can find the most recent FreeCAD versions in the github repository:
github.com/FreeCAD/FreeCAD/releases . Today the most recent version is: FreeCAD_0.19.21049-Win-Conda_vc14.x-x86_64.7z - If you have problems with it, I can also make a video tutorial.
Hi I don't seem to be able to make the groove I'm working with REV 24291 any suggestion welcome.
I'm experiencing a problem at this step also. My model vanishes and then I get the error "linked shape object is empty" if I follow through with the expression. Maybe a bug in this version? (I'm also on 24291)
Edit: Found a post describing why this was not working (in my case at least) and it has to do with "construction geometry" we used in a previous step. It is perhaps a persistent change vs. the assumed momentary switch. I went back into the sketch and selected the rectangle, then pressed the construction geometry button, and it let me proceed with the groove. Here is the link where I found the solution:
forum.freecadweb.org/viewtopic.php?t=50381
After making the PolarPattern and while making the Grove, my Sketch002 is gone and I get this error "Linked shape object is empty", any ideas? I cannot figure out so I will likely start again...
I just had the same problem - selecting the sketch and using 'toggle geometry' worked for me (looks like my sketch was in construction mode, and needed to be real geometry0
I am new to CAD and I am not a professional in CAD but wanted to learn about CAD. Luckily there is Freecad, a free software for me to learn without spending any money on it. Please make more videos in English as i found your tutorial is very easy to follow. If I can make a request for a tutorial, please consider to make a tutorial video how to modify on a STL file or STEP file that commonly distributed in Thingiverse with rebuilding the whole thing from scratch. For example, I would like to make changes on the holder of this Iphone 6 to Iphone 11 for example without any scaling in a slicer program. Thingiverse links : www.thingiverse.com/thing:2220698. Thank you so much for your considerations and please make more videos in English. Cheers
The sides of the rounded holes at the ends of the slot are not perpendicular to the surface though.
Great tutorial! But you're falling into the trap that computer programmers used to make, or trying to be too compact with variable names. Now there are some standard engineering terms, such as ID & OD, for the inner diameter and outer diameter of pipes,. Of course, these are probably different in English & German, so you might not know them. But "slot_x" might be a better choice than "dd"
yoo flowwie du hast dein insta gelöscht? wollte dich wegen dem replacement liner kontaktieren, hab aber keinen kontakt gefunden in meiner liste. kontaktier mich mal bitte über msg fb, whattsapp oder falls du nen neuen instagram account hast ;) peace
Jo Zenk melde mich bei dir über FB!
Curve bench crying in the corner
it takes forever to explain the main subject, all those details...
Way too complicated. Why not draw a tube then do a slot? There's shortcuts in Freecad to do that but the slot appears in wrong place