Rhino amateur creates a single-span model
ฝัง
- เผยแพร่เมื่อ 1 ต.ค. 2024
- Note: Since Rhino is unable to properly loose offset single-span degree 5 surface and creates chaotic output surfaces, I used an old "hack" with using the hugely underappreciated "MoveUVN" tool to offset the control points instead. That results into almost flawless loose offset surfaces that need just a few touches to maintain their tangency along the border.
Typically, Rhino is set to use "Lightweight extrusions" instead of regular NURBS surfaces. The former save you some RAM for improved performance at the cost of inability to edit the extruded surfaces via their actual control points. You can turn this setting off from the following menu: "Rhino options - General - Command behavior - Use extrusions when possible" (remove the tick).
3d CAD design and engineering:
/ sportni.koli.3
--------------------------------------------------------------
💚 If you like my work, you can support me with a small gift that will help me create more content like this 💚
PayPal: www.paypal.me/...
#rhino #rhinoceros #rhinoceros3d #3d #3danimation #3dprinting #3dmodeling #nurbs #alias #catia #solidworks #solid #how #howto #tutorial #tutorials #object #cad #industry #cnc #cncmachine #bulgaria #plovdiv #пловдив #българия
Wouldn't call you an amateur xD, but it is sad that we have such bad surface tools in rhino compared to something like alias.
Also I don't know what is wrong with me, but I didn't realise that offset tool had a loose option.
Yeah, you are totally right. This is why in this video I showed a workaround of one of the major weaknesses in Rhino when it comes to single-span surfaces. Cheers
Hi, I really enjoy watching your TH-cam videos and have learned a lot from them. Thank you! I have a question: The offset values using UVN and SRF offset are slightly different. How can I determine if these offset values are correct?
Hi, thank you for the kind words! The trick with offsetting a surface by moving its control points via the "MoveUVN" tool (seen after the 14:30 minute of the video) produce loose surface offset, because only the control points are being moved by the set value (the box field named "Scale"). Note that this is just an approximation which is not as accurate as a true surface offset. The advantage of that approach is that it preserves the same amount of control points, whereas the regular surface offset in most cases will produce an output surface with multiple extra control points. Hopefully this helps!
@@AutomotiveCNC I'm impressed by this trick-what a clever idea! Thank you. One question I have is about the thickness values for actual product mass production. Is the "srf offset (Loose)" command suitable for use in real product manufacturing?
@@랭키-i3w , as you can see after the 13:53 minute, the loose offset surface got extremely chaotic control points. This is a result of the way Rhino was programmed to calculate the offset surfaces by trying to maintain the offset distance as close as possible at the cost of heavy distorted control point. This alone leads to lots of potential issues, especially if you need to match the offset surface to the nearby surface edges OR match the nearby surfaces to the offset surface. In either case the matching will immediately lead to high distortion between the adjacent surfaces.
Unlike that, the trick with moving the control points by a set value via the "MoveUVN" tool will produce slightly worse deviation while maintaining the clean arrangement of the control points. Personally I prefer that approach, because it's more predictable and I can further adjust the control points.
Hi, thanks for this excellent video, I have a problem, at minute 1:50 after extruding the surface it doesn't show me the control points, what can I do? Thanks a lot.
If you take a look at the Command line right after extruding the surface, the control points were shown via the "_PointsOn" command. I have it assigned to one of my mouse's buttons, this is why I don't have to press its corresponding icon on the left panel. Cheers
Thanks for the answer, but what I mean is that it doesn't show me the control points, either by pressing the left icon of the panel or by pressing the F10 key, I will have some problem with the installation, or I have to explode the surface, thanks.
@@gptdesignusa5448 , looks like the extrusion you have is not a proper NURBS surface. I suppose that your Rhino is set to use "lightweight extrusions" instead. The latter save you some RAM for improved performance at the cost of inability to edit those surface via their actual control points. You can turn this setting off from the following menu: Rhino options > General > Command behavior > Use extrusions when possible" (remove the tick).
Thanks for your tips. it worked for me. You should do an online course on Rhino, I would take it with pleasure, you are the best in Rhino. Thank you.
@@gptdesignusa5448 , glad to hear that it worked for you. It's one of the first settings I tell people to turn off, because it basically "locks" the ability to fine adjust the extruded surfaces. As for your suggestion, unfortunately my spoken English is way too poor, this is why I prefer to share tips and tricks via silent videos. Cheers!
Always interesting to watch 😎
Thanks! :)
Thank you for the informative video. In creating the bottom rounded corner, you employed the VariableBlendSrf command. I was wondering if there's a specific reason you chose this over the Fillet command?
Thanks! I aimed for G2 continuity across all surfaces with degree 5 and 6 control points in each direction, this is why I opted to use blend surfaces instead of radius fillets.
@@AutomotiveCNC "Thanks for the clarification.It makes sense to use VariableBlendSrf for G2 continuity and the control it offers with degree 5 and 6 control points. Your approach to 3D modeling is insightful!"
@@LeoWen-n7k , the good thing about having 6 control points is that the middle 2 control points could be adjusted manually while maintaining the tangency of the end control points.
If you don't mind could you share that "Bobi X10" custom view set at 43:23? I tried so many times to making view set look like that but I couldn't :/
Sure, you can download it from the link below. Keep in mind that it has two versions (I included both in the first post in that topic). It also uses a "Brushed silver" environment map, which is also included there.
discourse.mcneel.com/t/share-your-custom-viewport-modes-here/151321
@@AutomotiveCNC Oh, you are the best! Thank you so much for that topic! Very well writed... Also cheers from Turkey, saying this as a Bulgarian origin Türk :)
@@karltroidvsbondman , thank you for the kind words! Greetings from Bulgaria! :)
Great video MISS VSR so much
Thank you! I would love to see a comeback from VSR, but unfortunately it's only supported by Rhino 5. However, there is a new plug-in currently in development, which is promising and may end up like a good replacement for VSR. In fact, it's made by one of the original programmers or VSR. :) The plug-in is called Cyberstrack and you can download the free preview and read more about it here:
discourse.mcneel.com/t/cyberstrak-plugin/170862