Completing the Third Spline Repeat steps 3 through 5 of Creating the Third Spline, but first select the horizontal construction line, and then the spline. With sketching finished, you can turn off plane visibility. Click PropertyManager , and under Visibility, clear Planes. Close the sketch and click File > Save to This PC. Parent topic3D Sketching with Planes Previous topic Creating the Third Spline Next topic Creating the Loft