The hardest topics for the surface modeling certification is Practicing on a 3D curve,Sketch Picture, Loft, Boundary Surface, Trim,Fill,Split And Split line commands, Knit, Thicken, Face to Face fillet. These are some what basic things you have to know for Surface Modeling Certification.
Specially Go through model creation of Mouse, Remote, Bi-Cycle Frame and Instant 3D creation and modification.
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E G S Computers India Pvt. Ltd.
I totally agree, a month ago I past the Surfacing exam with a score of 100%
It was the second time I entered the exam, the first time I failed mainly on the topics:
Blending the bycicle frame, creating the surface of which te boundry's are determined by a 3D Spline.