SOLIDWORKS - Creating a Coped Cut Perpendicular to a Pipe
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Coped cuts created by the trim command follow the profile of adjacent geometry. The Ruled Surface and Cut With Surface tools can be used to easily trim coped cuts perpendicular to the pipe.
https://www.youtube.com/watch?v=vuNuXwZH-k0&feature=youtu.be
For more information about SOLIDWORKS, visit https://www.hawkridgesys.com/products/solidworks