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Picking up an Intersection with a Sketch Plane
nick_hanigan
Member Posts: 10 PRO
I wish to sketch at an offset of a set distance (0.8mm) into a curved object (a rounded tablet). I can set up the sketch plane A.O.K, however next I wanted to find the intersecting faces of the curved edges to pick up and create an new extrusion face. I am not sure how to 'pick these up' to create the sketch references, noting the 'U' Use command seems to be suitable for entity extremities not part way intersects - nor does the intersect obviously allow me to click to select.
I find if I navigate to the new face out of sketch mode, I am suitably able to select the edges to form a completed loop, however this doesn't seem useful as when I switch to sketch mode, those selections are lost.
If someone could point me in the right direction, that would be really appreciated. NH.
I find if I navigate to the new face out of sketch mode, I am suitably able to select the edges to form a completed loop, however this doesn't seem useful as when I switch to sketch mode, those selections are lost.
If someone could point me in the right direction, that would be really appreciated. NH.
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It sounds like you're on the right track with using the "intersect" command. However, I believe the intersect command requires you to select a face or surface, rather than an edge. It then creates lines/curves on your sketch plane where that face intersects the plane.
https://cad.onshape.com/help/Content/sketch-tools-intersection.htm
Sounds doable, but the solution will be dependant on more info.
Share!
Thank you both. What you said was enough to turn my head in the right direction. I appreciate your support. Nick.
I usually just create a sketch on the offset plane, then draw a point. then make it coincident, or pierce, etc.. to define the 3D point of intersection.
Here you can see I created planes on the axis of the helix
then created a sketch point that is coincident to the bottom edge of the part (blue line)
then measured 2" up from there to sketch a hole, which is then extrude - cut. (red line)