Distinctions Between Class C, B and A Modeling Requirements

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15$ to 45 $ Why not take 2 min to do it now?

Learning Alias sponsors the Education of children in Nepal. But right
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Hi , This is an open article initiated by a South American Alias Automotive Modeler so, if you want to email me with additional input and share your wisdom with our Alias community, that would be great! You can just add a sentence or two  or write a lot more about this topic. Your experience and knowledge is important to all Alias Automotive students Worldwide! I  hope that over time this will grow into an in depth and useful definition of what OEM’s regard as Class A, B and C. This will only happen if you make your contribution! Thank you.

(NB: A good way to contact me is to go to my website:
www.learningalias.co.uk
and message me with your content or request my email.)

I am always being asked to define these 3 modeling standards

and I can only do that in general terms, as all OEM’s have different ideas and standards for class C, B and A modelling. I meet the Class C, B and A guys on a regular basis , so here’s a bit of incite into how major OEM’s make the distinction between the 3 concepts:

Class C coordinator –

They emphasize EVEN CV distribution, recommending that modelers use  5×5 deg. surfaces, as if you need to go beyond 5×5 this might be an indication that the area is not fully resolved. Modelers always have to build a sharp closed volume model first with the theoretical intersections (TPI Theoretical Point of Intersection.Sometimes referred to as;  TLI, Theoretical Line of Intersection , then fillet. At this stage they are not interested in G3 continuities, and even ball corners can be split into several smaller surfaces.

NB: Some OEM’s try to enforce a regime of 3 x3 / 3x 5 deg. srfs. IMHO. There are a few parent srfs on an exterior that can be easily formed using 3 x 3 deg. (eg; roof and main side-wall)

Class B definition –

The Project is halfway frozen (Parent surfaces have been approved), panel gaps are then generated, some surfaces are further smoothed.

Class A definition –

The Project is totally frozen, continuities are all resolved to G3 wherever possible. All Engineering edicts have been incorporated , no zebra-plot “Jaggedness” throughout the model. Everything must run smoothly. Ball corners must all be made out from one single Bezier surface. Now the final touch, what some OEM’s refer to as Profiling /tolerancing, which is the nominal offset between two adjacent surfaces designed to match, say, the fuel cap cover/lid, which is initially just a panel gap. The surface of the cap is intentionally offset inwards around 0 .2 millimeters, just to compensate for some process tolerance, as expected all fillets must then be rebuilt.

kind regards

graham bullock

 

Hi Guys

My name is Manohar and I studied with LA, sinve then I have gained several years of Class A experience with a leading OEM. I would like to add my point of view to this open article and hope that some of you other guys out there will chip in too in order to help the next generation of Aliaas modelers coming thru:

 

Here I want to say that I am not clear with class B & C, I know only Class A & Non Class A. Sounds funny but Really I never tried to search for that till now.
Here In  Our Studio general practise try to use Class A only, which includes, 3*3 or 5*5 degree Surfaces without spans & with uniformly distributed CV’s. Also surfaces wit h proper lead in so as to achieve G2 & G3 continuities. In concept modelling also we try to make it with class A ,but yes Some time it ends with non-Class A or  will say like lil Less Class A.
So our approach is Class A only. only in some cases where we don’t have any choice like Engineering driven areas then we are using Non-Class A, it may be Class B or Class C, but I am not sure about what is class B and what is Class C exactly is. So I won’t comment on it. But sure I will get some info from your website about it in coming days..  🙂

Info. on Courses:

“Course #1″.

6 Months website access to all website based video tutorials, 167 Euros (215 USD equivalent Sept. 2012)

“Course #2″.

167 Euros (215 USD equivalent Sept. 2012) per month. You get your .wire reviewed by me every 15 days and you will receive : feedback, instruction, tips and advice from me personally. Access to all videos including my ” Private Student Training Videos”. You will build at least 3 complete automotive exteriors. The course also includes an intensive Reverse Engineering section, which required by most employers.

“#3 Full Pro. “Elite” Course”.

Fast Track Full Pro. “One to One” Course with weekly reviews and coaching 200-250 Euros (USD. 260-320 approx. Sept. 2012) per month. One to One Private tuition. You will receive specific geometry and meshes and modeling from me personally where required, to help you to complete your exteriors quickly to an Industry entry level standard. This means a bigger investment, but once in an Alias modelling job you will get back what you invested many times over and be able to work anywhere in the world

NB: Typically students pay 50% of the cost of the “Elite” course by monthly instalments settling the balance over time,  once they have an Alias Automotive contract.

For more info,

Just register on my website and I’ll send you all the details
www.learningalias.co.uk

Just register on my website and I’ll send you all the details
www.learningalias.co.uk

*** Special 25% Discounts for US students (Message me on my website for details)

 

课程信息:

“课程#1”。

可使用所有网站的视频教程6个月,167欧元(215美元相当于2012年9月)

“课程#2”。

每月167欧元(215美元相当于2012年9月)。你将每隔15天收到我个人的指导,提示和建议。使用所有网站的视频教程,包括我的“私人学生培训视频”。你将建立至少3个完整的汽车外饰。当然也包括密集的逆向工程部分,这是多数雇主所要求的。

“#3,全专业。 “精英课程“。

迅速专业。 “一对一”课程,每周评论和教练每月200-250欧元(2012年9月USD.260-320左右。)。一对一补习。在有需要时,您将收到具体的几何形状和网格和建模,以帮助您快速完成你的模型,而达到入行级标准。这是一个更大的投资,但一得到Alias建模工作,你会得回你投资的许多倍,并能在世界任何地方工作。

注:通常学生支付50%“精英”费用。当然是每月的分期付款。一旦得到Alias建模工作合同,就可逐步解决剩下的费用。

欲想了解更多信息,只要在我的网站上注册,我将传送你所有的细节。

 www.learningalias.co.uk

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