是国外的两篇教程，忘记在哪里下载的了，找东西时无意发现的，传上来供初学者体会一下建模思路。

Standard ISDX Tutorials
Bike Seat tutorial

This tutorial was designed to be used with an instructor. Under licensed agreement, these tutorials may be used on an internal Intranet site. These tutorials were however designed and meant to be left behind for individual learning. The primary purpose of this tutorial is to act as a reminder for those who went through our training workshop.

+Plan
Think about re-sketching Industrial Design Sketches respecting tangency lines and four part boundaries in order to formulate your specific plan of attack. Try to use your previous three part boundary trickery.

+Bounding Box
The bounding Box is a way to make the most extremely efficient and extra ordinary robust model.

+Sketched Curve
Now Build the curve to the specifications to the left.

+Layout Curves in Style
This curve might also be a style feature. Since we are practicing ISDX use your new tool for this feature. This layout curve defines the underbelly of the seat. In this screen capture, the bounding box is layered off.

+More layout curves in Style
Overall profile sketched using a Superfeature inside of Pro/ENGINEER.Just curves not surfaces for this example.

+Next Step
For the next step, we will build up a three part boundary from a sweep that is trimmed back.

+Sweep
Build up a sweep feature with the start point on the front. It's trajectory comes from the curve 'also a style' feature from above. The section should be a use edge from the profile curve that is sketched on the 'FRONT' DTM.

This feature will be trimmed back after a curve is sketched right onto the surface.