You help me discover that "sculpt" tool. It helped me a lot for my job! Thank you Lars! 2 years later, your posts are still relevant and instructive as well.
Your friends will probably be more impressed if your knowledge of G0..G3 is a bit less confused. G0..G3 are not directly about curvature per se, they are about _continuity_ of curvature at a particular point. This page has a fairly nice and concise discussion: dpt3.dptcorporate.com/Content/Help/language/Mathconc/T_MC_ContinuityClassification.htm G0: Do the two curves meet at this point? G1: Do the two curves have matching direction (tangent) at this point? G2: Do the two curves have matching rate-of-change-of-direction (curvature) at this point? G3: Do the two curves have matching rate-of-change of curvature at this point? In short, G0 is about matching position in space, and G1..G3 are about matching direction and its first 2 derivatives. (Or, G0..G3 are the -1..2 derivatives of direction.)
Great topic Lars! I'm glad I understand two new tools for examining curved surfaces, and I'm feeling more and more interested in the Sculpt environment all the time!
Excellent video - really interesting and very well done :-) I'm just having to catch up with the previous 58 LarsLive as I only recently started with this stuff - Even if it's only "for fun" (as my son is learning this at school and I'd like to understand a bit better how it's working, now I've see how powerful it is, compared to the old ages when I had to draw on the paper when I was at school) and to understand how it's working as I bought for my son a 3D printer, and just want to play around and have some fun with it, really interesting and cool to learn some new stuff ! Started with your "beginner" sessions, I now will have to find & take some time to follow you more regularly ... keep on doing such livestreams, even if we can't follow real time, we can watch your recordings and always will enjoy :-) Kind regards from France Laurent.
Lars, for more info on G1, G2, G3 here is a link: docs.mcneel.com/rhino/5/help/en-us/popup_moreinformation/continuity_descriptions.htm Thanks for your videos, if you don't learn something while watching you are probably asleep!
Continuity is basically related to how many times you can differentiate the interpolating polynomial and not get a jump across the junction. i.e. it's always the order of the interpolating polynomial minus 1. Hence linear is C0, Quadratic is C1, Cubic is C2 etc. In this case the interpolation is normal to the line of the junction. I'm not sure about G, but I guess it's likely the tensorial equivalent of C?
It would have been interesting if you had brought in a 3D sculpture of a car or phone and shown the curve analysis on something practical. Maybe in the future :D
Sir , how should I prepare myself for becoming a good CAD desiger in the coming 3 years? Are RUclips videos sufficient for the purpose? I spend a lot of time on RUclips, seeing designing videos (4-5 hours a day) Currently I am in second year B.tech Mechanical Engineering, VIT Vellore, INDIA. & Also I want to pursue Masters degree in mechanical design engineering, which University will be best for that in USA?
Yeah, great idea! It's always good when you talk to a women about curves... ^_^ Seriously: This made me aware of curvature continuation. These two analysis tools are a great help to see whats going on... 8-)
Esta aula foi muito proveitosa, a maneira como mostrou as diferentes maneiras de fazer curvas foi muito práctica. Senhor professor virtual. Esta é a minha 5ª aula. Abraços
Do you have a list of topics ahead of time? I cannot watch every day but would really like be aware of what's coming up so I can set aside some time for interesting topics.
Good morning! Thank you so much for your helpful videos!! I am trying to create a helix type of groove in the interior surface of a turbine so that it will start with a very tight pace at the top, will gradually widen until the tangent of the grooves at the exaust port becomes perpendicular to the initial grooves. Do you think that 3d sketching is how I should I approach it? Any help please (total noob here).
@@Pepsodent08 Second derivative tells you about convexity of a graph. A curvature comb gives you a direction and a character of the curve. "comb" is a multitude of lines, which are always orthogonal to the curvature. Length of these lines is proportional to how steep / sharp the curve is at any given point.
Hey, Lars! First, thank you so much for this video. And I'm wondering there is any possible to do some creation of mountain shapes or landscape in Fusion 360?
Hi Laws Rosten Thank you for watching! You could. You could also search for scanned stl files on the internet and bring them in.....almost like this: ruclips.net/video/cKXvIWpLoeU/видео.html
Please anybody, how can I edit the end/start of a spline? It's like these two points are locked in and I can't move them... do I need to delete the entire spline end reso from scratch if I need these two points a bit moved?
Excellent. Note - I had trouble with your pronunciation of "comb", which sounded more like "comp" than "com" (to rhyme with "dome"). Confused me a bit.
Hi Karl Fimm Thank you for watching! Sorry, in the past I would have claimed that English is my second language, but I have been away from Denmark so long that my Danish is getting about as bad as my English...I am not sure I have a first language anymore :-)
Sorry man, loving your Fusion skills, but my head started aching some when you mangled those spline handles… perhaps there exist a more recent, more clear tutorial… 😏
Assuming that the "comb" tool plots something like inverse curvature (ie: 1/r), then I think what you're saying translates to first derivative of curvature matches at the junction, which I think does correspond to g3.
You help me discover that "sculpt" tool. It helped me a lot for my job! Thank you Lars! 2 years later, your posts are still relevant and instructive as well.
Your friends will probably be more impressed if your knowledge of G0..G3 is a bit less confused. G0..G3 are not directly about curvature per se, they are about _continuity_ of curvature at a particular point. This page has a fairly nice and concise discussion: dpt3.dptcorporate.com/Content/Help/language/Mathconc/T_MC_ContinuityClassification.htm
G0: Do the two curves meet at this point?
G1: Do the two curves have matching direction (tangent) at this point?
G2: Do the two curves have matching rate-of-change-of-direction (curvature) at this point?
G3: Do the two curves have matching rate-of-change of curvature at this point?
In short, G0 is about matching position in space, and G1..G3 are about matching direction and its first 2 derivatives. (Or, G0..G3 are the -1..2 derivatives of direction.)
skip to at least 3:26 - Lars is WINDY!
Great topic Lars! I'm glad I understand two new tools for examining curved surfaces, and I'm feeling more and more interested in the Sculpt environment all the time!
Lowkey love these videoes. You are the best teacher I've ever come across, almost wish you could tech me the school curriculum!
I will certainly try to talk about the G-spot the next time I am having a conversation at a party.
Excellent video - really interesting and very well done :-) I'm just having to catch up with the previous 58 LarsLive as I only recently started with this stuff - Even if it's only "for fun" (as my son is learning this at school and I'd like to understand a bit better how it's working, now I've see how powerful it is, compared to the old ages when I had to draw on the paper when I was at school) and to understand how it's working as I bought for my son a 3D printer, and just want to play around and have some fun with it, really interesting and cool to learn some new stuff ! Started with your "beginner" sessions, I now will have to find & take some time to follow you more regularly ... keep on doing such livestreams, even if we can't follow real time, we can watch your recordings and always will enjoy :-)
Kind regards from France
Laurent.
That is awesome to hear Laurent Kraft .Thank you for watching the videos and good luck with the 3D printer :-)
Have an awesome day!
Tx, same to you
Awesome as always...
Sweet!!!...never knew anything about this...always been a "fillet it" bloke....great for nicer styling etc. Cheers Lars.
Thank you Douglas Thomson
This channel is really underrated (
Thank you Rovio Guns
Lars, for more info on G1, G2, G3 here is a link: docs.mcneel.com/rhino/5/help/en-us/popup_moreinformation/continuity_descriptions.htm Thanks for your videos, if you don't learn something while watching you are probably asleep!
That is a great link Arlen, thank you so much for sharing!
Have an awesome day!!
thanks! good tutorial. viewer from hong kong
Continuity is basically related to how many times you can differentiate the interpolating polynomial and not get a jump across the junction. i.e. it's always the order of the interpolating polynomial minus 1. Hence linear is C0, Quadratic is C1, Cubic is C2 etc. In this case the interpolation is normal to the line of the junction. I'm not sure about G, but I guess it's likely the tensorial equivalent of C?
Thanks for posting the video. Very helpful, indeed!
I like what you are saying on the curves.
Thank you Viktor Krivorotko
sir i can never catch it live. Thanks for the video always great ...... salute
You are so very welcome :-) Thank you for watching!
It would have been interesting if you had brought in a 3D sculpture of a car or phone and shown the curve analysis on something practical. Maybe in the future :D
Hi MonteCarbo Thank you for watching!
Yes, you are right! an excuse for another livestream :-)
#Lars Sir,Me also waiting for something like that. Hope to see that very soon.
That was so cool. Thank you
you have a very clear pronounciation, i like it!
Thank you Aman Chaure
Sir , how should I prepare myself for becoming a good CAD desiger in the coming 3 years?
Are RUclips videos sufficient for the purpose?
I spend a lot of time on RUclips, seeing designing videos (4-5 hours a day)
Currently I am in second year B.tech Mechanical Engineering, VIT Vellore, INDIA. & Also I want to pursue Masters degree in mechanical design engineering, which University will be best for that in USA?
Hi guess I am one year late. I just started following and learning Fusion 360. Next week o this date will be my Birthday. its all about timing.
Yeah, great idea! It's always good when you talk to a women about curves... ^_^
Seriously: This made me aware of curvature continuation. These two analysis tools are a great help to see whats going on... 8-)
That is awesome to hear UncleManuel .Thank you for watching the videos
Esta aula foi muito proveitosa, a maneira como mostrou as diferentes maneiras de fazer curvas foi muito práctica. Senhor professor virtual.
Esta é a minha 5ª aula.
Abraços
Fico feliz que você esteja achando útil. Tenha um excelente dia
Thanks Lars, it is a very video.
very
Do you have a list of topics ahead of time? I cannot watch every day but would really like be aware of what's coming up so I can set aside some time for interesting topics.
Hi Kevin SkyMoCo Thank you for watching!
I am really not that organized :-) every Monday morning I scramble to try to figure out the week's topics.
Interesting when you think about it, consumer products are really curvaceous!
So true. Try an look at a car, there are rarely a straight line anywhere :-)
15:15 the green end point of the curvature should be the "anchor" point as it is on Illustrator
Good morning! Thank you so much for your helpful videos!! I am trying to create a helix type of groove in the interior surface of a turbine so that it will start with a very tight pace at the top, will gradually widen until the tangent of the grooves at the exaust port becomes perpendicular to the initial grooves. Do you think that 3d sketching is how I should I approach it? Any help please (total noob here).
Lars, good theory, I guess it's very helpful. Thanks!
Hi Andrey Rybka Thank you for watching!
i'm sure this is such a conversation starter
Hi Heber Boerr Thank you for watching! :-)
First order derivative gives line tangency (G1), second order equation give curvature (G2), not sure about G3 though.
In my own words, curvature analysis measures how greatly is given curvature deviates comparing to a plane.
Only learned math up through calc ii, am I right in thinking the curvature combs are essentially showing the second derivative along that line?
@@Pepsodent08 Second derivative tells you about convexity of a graph. A curvature comb gives you a direction and a character of the curve. "comb" is a multitude of lines, which are always orthogonal to the curvature. Length of these lines is proportional to how steep / sharp the curve is at any given point.
@@Pepsodent08 Good question though.
Hey, Lars! First, thank you so much for this video. And I'm wondering there is any possible to do some creation of mountain shapes or landscape in Fusion 360?
Hi Laws Rosten Thank you for watching!
You could. You could also search for scanned stl files on the internet and bring them in.....almost like this:
ruclips.net/video/cKXvIWpLoeU/видео.html
Please anybody, how can I edit the end/start of a spline? It's like these two points are locked in and I can't move them... do I need to delete the entire spline end reso from scratch if I need these two points a bit moved?
Excellent. Note - I had trouble with your pronunciation of "comb", which sounded more like "comp" than "com" (to rhyme with "dome"). Confused me a bit.
Hi Karl Fimm Thank you for watching!
Sorry, in the past I would have claimed that English is my second language, but I have been away from Denmark so long that my Danish is getting about as bad as my English...I am not sure I have a first language anymore :-)
Man i can never catch it live. Thanks for the video always great
Thank you All Customz
Can't find the Patch menu... 3 years later can someone help?
It was moved to the main set of tabs. Click Surface.
@@Giggity4242 Thx!
I need to open my eyes
@@emile_sadria No worries, I needed to google it lol
Hello Where/how do I sign up for the live feeds? Thanks in advance.
Hi T E wilkerson Thank you for watching!
If you subscribe and hit the little bell for notification. You should be notified when online.
Best,
Lars
Sorry man, loving your Fusion skills, but my head started aching some when you mangled those spline handles… perhaps there exist a more recent, more clear tutorial… 😏
Free CNC Handbook is broken :(
Sorry. Site got hacked again...People are working on it, I was told :-)
@@cadcamstuff Thanks for letting me know, I'll make a note to check in a bit.
You would have reached g3 i guess when the curves in the analysis tool are tangent to each other
Assuming that the "comb" tool plots something like inverse curvature (ie: 1/r), then I think what you're saying translates to first derivative of curvature matches at the junction, which I think does correspond to g3.
I am from Pakistan