Alias Tutorial – Dynamic Section Control – Visual Clipping –

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Evaluating what you have created in Alias is a real must have skill and you can learn it by following my Professional Training video course. I teach all the most tricky blends including the fully blended C Pillar found on German prestige cars.

Visual Clipping

The red comb is produced by the Dynamic Section Control “Visual Clipping Mode”

We can see that the transitional surface does not have a smooth xsec it has a flat in it.

Iso Shader

I have used this tool with “Visual Curves” to show exactly how the highlights would look on this surface. We can see that there is  a wave in the transitional surface set and just below the 3rd “W” there is a peak, caused by a curve which is too flat

Also just above the “i” the comb is showing us that there is no continuity between the 2 srfs.


 Visual Clipping in Alias

Towards the bottom. the blend only has G2 crvtr. but all 3 srfs. have a smooth xsec

At the top, 2 surfaces that should have G3 only have Tangency

So we can read a lot about the relationship between surfaces in Alias from these superb evaluation tools

Pictured below is an Audi A5 Sportback built by one of my students who is now a Digital Sculptor for GM.

Full HD video, just click the picture below

I am now putting some of my tutorials on YouTube, so whilst you’re there you may wish to check them out. There’s a full tutorial on how to create a Ball Corner to Class A Surfacing, Catia V5 spec.


how to build a car

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To see just how quickly you can learn Automotive Modeling, with a Pro. Alias Trainer to help you



For student’s who have the objective of finding a CAD job in the near future, I still teach One to One students and all of these students get Automotive Modeling or Design/Modeling jobs, so it’s a great investment to make.

Check-Out my Customer Feedback,

Many of my students make it to the top and succeed in becoming pro. Alias Digital Modelers. The hourly rate is very high and there are vacancies in UK. France, Germany, USA, Brazil etc.

On my website I teach you how to build the models you need to get accepted at interview. Why not take a look?
Info. on Courses:

“Course #1”.

6 Months website access to all website based video tutorials, 167 Euros (200 USD equivalent Nov.2011)

“Course #2”.

167 Euros (200 USD equivalent Nov.2011) 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.

“Course #3”.

Fast Track Full Pro. “One to One” Course with weekly reviews and coaching 250 Euros (USD. 300 approx. Nov. 2011) 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 modeling job you will get back what you invested many times over and be able to work anywhere in the world

For more info,

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Graham Bullock B.Ed.(CNAA)Des.Tech.

Go to Learning Alias

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