FreeCAD 0.18 Sample Project, Creating a Radio Knob
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- Опубликовано: 30 мар 2019
- This Video shows the Workflow i used to recreate a Vintage Radio Knob. Used Techniques are Revolution, Polar Patterns, Shifting Sketches .
It also shows how to deal with :
Lost Sketch orientations
Erraneous STL´s with duplicates Points when Polar Patterns are in use.
This and that Tricks in Part Design.
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Feel free to comment, but in case of QUESTIONS please visit the FreeCAD Forum and post a help request or even better find your answer in the many posts to be looked at.
Audience : Users who have a basic clue of Part Design and watched my previous Videos 
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Your tutorials are the best for FreeCad I found on web. Without them I would probably not start with FreeCad. I am total beginner in CAD design and I need only two afternoons for starting to design parts for refurbishing my old sailing boat. THANKS!!! Looking forward for next tutorials, especially for coming 0.19 version.
You've got me FULLY CONSTRAINED to your excellent Free Cad tutorials, and I'm definitely buying you a beer. Cheers ! And a note to all the Free Cad newbies out there: If you get stuck and something is not working out like in the video, whatever you do - DO NOT GIVE UP!. Rewind and try again even 5 times. And If it's still not working out take a break, have some coffee, go for a walk, take a nap, whatever. Come back and try again in a fresh state of mind. Eventually it will work out !
Thanks, i will make new videos as soon as m time allows... thanks for the beer
Thank you for the good video. It is amazing how many different work flows that will still make the same part.
Clearly explained the problem areas and some of the tricky features using this knob example. Good work.
A really nicely paced tutorial - I learned a lot. Thank you/
Thoroughly enjoyed watching your tutorial Very nicely explained and @ decent speed with extremely good detail
very nice explanation, hopefully you can share more freecad videos. i am newbie as freecad your video is really helpful, thanks
this a Supercalifragilisticexpialidocious video... i guess the freecad designers have a huge list of fixes and new features requests... the knob looks great! thanks a lot...:)
Great stuff. Thank you!
Albeit the bugs, FreeCAD still is a beautiful piece of software. I'm a newbie and the more I learn, the more I get amazed at the immense number of features it has. Thanks, Ha Gei, for showing them to us in such a clear way.
I'm trying version 0.19, even if it's not the stable version, and I've found out that it doesn't have the problem with altering positions with offsets that you mentioned at 26:30. Thanks again and continue the great job.
Parabens amado Professor!!!
Nice video, tkx for your efforts to teach us Freecad.
I have some serious work ahead of me to learn this program. Thanks.
Thanks, This is also very good. your tutorial help me a lot!!! this is good idea "Creating a Radio". Thanks again!
Wonderful!
Very nice! Thanks!
nice i am going to watch all your videos
I want to try FreeCAD now that I have my licence with Tinkercad. I'm amazed at what can be done in this program but like all these things you've really got to play with it for a bit in order to understand what you don't know. Right now all you've done is give my a headache. I'll watch it again once I have the program. Thank you though for this video.
thank you for the very well done video.
Very helpful, thank you :)
Well explained tutorial, thanks!
The presenter may seems slow but detailed. The slower pace is very appropriate so that inexperienced user can also follow up. What he does at every step is shown clearly (where he clicks) and why he does so, is also explained clearly.
Thank you also,
Thanks Master
very good video. One thing... Please take the mic off of your desk or isolate it somehow.
I understand what and how you designed the knob, but I have got a bunch of learning to do on free cad
After 5 weeks I am making baby steps with Freecad Your video is good it shows the tree. What all theses videos lack, is documentations to follow. Is there any video's that might have that ?
Great tutorial. Trying to hang on😉
At 25:55 there seems to be no way I can edit the “0,00 mm” and thus put in the reference to the sketch dimension. I cant’ delete or edit the digits and If I try to overwrite with other numbers I just change the wiew position accordingly. Same in edit sketch mode.
The “F(x)” symbol in the field is greyed/inactive as well. What am I missing?
Thanks😊
German english with stuffy nose... What a phonetic combo...
Nice tut by the way, good job.
Well.... There are lot´s of dialects on youtube that no one understands without a stuffy nose ..and the franconian dialect.....
@@hagei406 true :)
Thx again for this very interesting tutorial!
Agreed when you say “... filled & chamfer ALWAYS in the last steps... “ BUT in this case: Why shouldn’t you draw it already in the sketch just before the revolution? I think thats a much better moment?
Yes, of course , both are better done inside the sketch. But i wanted to show the functions as such in the video. Tutorials must sometimes contain uneccesary workflow elements to expose functionality.
Thanks for taking your time to walk through this example. On the last step (Sketch004) hy would the Edge Trim not work on the circle sides? The workspace just flashes and the circle remains. I can delete the horizontal lines inside the inner circle but not the parts of the inner circle. Same version as yours.
Try again, it may be the sequence of clicks that is the problem. Otherwise send me you file, i can look and then tell you what is wrong.
@@hagei406 Ohh I tried to click many times. I tried to reload the model etc. Nothing helped. But I did solve it - I removed the tangent constraint on the inner circle and that allowed me to trim the top part of the circle. I had to add a horizontal constraint to keep it at 3mm and to fully constraint the model. I have no clue why the tagent constraint would do that?
Rather than adding that final chamfer to the 24 edges at the end, couldn't it have just been included as a part of the original sketch for the Revolve? Great tutorial by the way 👍
Sure, but in a tutorial i want to show functions of FreeCad, not how clever i ( think) i am
I'm a SelfCAD user
Thank you very much for a great video. I have a question. When you complete a "formula editor" box, where do you find the required programming input? Is there a Freecad reference publication describing the correct sequence for doing that each time?
Well, in .18 you see all possible enries on 1st character input. In .19 this is unfortunately lost at present. I am not aware of a simple documentation about these things..especially due to the changes involved from 0.18 to 0.19 . You may have to ask in the Forum.
Much appreciated. Thanks.
18:43 weird, I always select: dot, line, dot to do the symmetrical constrain and it works (on 0.16 and 0.17 versions), when I tried as you mention dot, dot, line never works, just did some strange stuff instead.
Edit: I just tried again, now works on both cases, on 0.17
I think the old versions were very picky about the order. Maybe the newer ones do some more guessing.
@@XTL_prime Guess you are right. I have been using both 0.18 and 0.19 and I haven't had any problems with the order in which I select points and symmetry lines.
Very nice tuto! It seems to me that at this step: ruclips.net/video/H9qPMf3pxxo/видео.html there is no need for a tangent helping line to prevent the arc to go upper the structure. Just by fixing the center point of the arc on the center line (1 constraint) we ensure the arc to have the right position.
About 24:40, Why not creat a sketch in the top "ring" and make pocket, so that you can control the depth
Well, as usual, if you want to show a functionality,, in this case revolution, you may choose a not so obvious way. There are several possibilities. But the least good one is choose the top plane and create a sketch..this exposed a probability to step into a toponaming problem. My Tutorials try to show ways to avoid that.
view must be straight-on (top, side etc.) in order for symmetry constraint to work properly. Not working if view is 3/4.
At 15:04 I cannot get the line to be selected after choosing the 'external geometry' tool. I am using 0.18 revision 16093 +53 (Git) on Ubuntu 20.04. Does anyone have any idea what may cause that?
I have no clue, there is nothing special at that point, other than you musdt look from the side before selecting.
around 25:50 my frecad can't respon to edit positon, i click it on x,y,z also on position tab "..." and type "=" sign it stil in unchange mode what sould i do?
I was having the same problem, but finally figured it out! You can only edit Attachment for the sketch, not Placement. Check what section of the data window you are trying to change.
44:18 I got stuck here. FreeCAD 0.18 Rev 4 doesn't want to trim the two upper arcs of this inner circle. When I zoom in, it appears that the circle's edge is not actually touching the horizontal line. I found several mentions of this being a bug in FreeCAD. How are you getting around this?
I found one person who drew a box around the area where the circle and line touch. For some reason then FreeCAD allows me to cut away the pieces of the circle. I can delete the box afterward, and all is well.
Also, I had an extra degree of freedom after setting the 3mm vertical distance after the cutting. The two horizontal lines were 3mm from each other, but not fixed in vertical space. I had to set the horizontal distance between the two points inside the leftover inner circle to 10.35mm, which is what they were originally. After that my shape was fully constrained. Just a heads up to future viewers who may run into these issues with whatever version of FreeCAD they may be using.
46:01 in my version of FreeCAD, I had to set the fillet to 0.99mm. Using 1.0 resulted in a "Resulting Shape is Invalid" error.
Hey how was you on off the revoluarion mode plzzz expain
Sorry, i cannot follow you ?
@@hagei406 sorry
BEFORE you start your Sketch make sure Auto Restraint is on. To activate Auto Restraint click the "Edit Controls" menu in the sketcher side bar. If auto restraint is already activated toggle auto restraint off then on again and it should work. This tutorial should work if your sketch initially disappeared while creating a revolution.
Thank you very much
Vishal, perhaps you have already discovered, but you can toggle revolution and other features on/off by selecting them on the model tab on the combo view and pressing the space bar.
I don't see the constraint symbols that follow and appear with the cursor in this video. Does anyone know why? Here is my version.
OS: Windows 10
Word size of OS: 64-bit
Word size of FreeCAD: 64-bit
Version: 0.18.4 (GitTag)
Build type: Release
Branch: releases/FreeCAD-0-18
Hash: 980bf9060e28555fecd9e3462f68ca74007b70f8
Python version: 3.6.6
Qt version: 5.6.2
Coin version: 4.0.0a
OCC version: 7.3.0
Locale: English/UnitedStates (en_US)
i just tried and here it works fine. Also 18.4 on windows. I guess it´s a setting that differs. Yre you sure you have automatic constraining set to on ? and also, that your cursor is close enought to the nex possible entity for constraining ?
@@hagei406 Under "Edit Controls" Auto Constraints is on. I don't think not being close enough is an issue. All I ever see is the Cross Hair, the tool symbol, and the coordinates. Nothing else ever shows up. I also don't see the "red tags" next to the line indicating things such as horizontal.
Any other ideas?
@@williamstrater8065 no...maybe someone in th forum knows an answer..
well thank god for thingy verse. I don't get this at all ?
I've been using Tinkercad to make stuff. Just downloaded FreeCAD after seeing another guys video.. yeah I'm lost
Yea completely lost by the 10:30 mark due to your winging it point and clicking all over the place plus the use of key strokes that you weren't calling out. Perhaps you should script what you are doing to do first before creating a how to video.