I made a sketch on a certain plane. I used that sketch for a boss. Now I want to make another sketch from the same plane, but I can't select it anymore. Is it possible to tell SW somehow, "Start a new sketch on the same plane as this sketch?"
Ram, read the online help on the "Select Other" tool that allows you to select faces that are obstructed by other geometry.
However, if your case is what Glenn described-where another feature absorbs the face, the only thing you can do, is roll the history bar back before the feature that absorbed the face and create a plane coincident to the face and then roll the history bar forward. Planes and other reference geometry are not absorbed by features,so you'll be able to create the sketch then.
You should be able to select the same plane from the FeatureTree to start your second sketch.
You're right. Thanks Eric!
No wait, that doesn't work. I select the sketch but it edits the old one instead of creating a new one.
you have to select the plane not the sketch
If by "FeatureTree" you mean the tree that is overlayed on the 3d view, then there's no entry for the plane there, just the sketch.
pick the plane here
What I see here is the 3 basic planes: Front, top and right. I don't want any of them, I want the plane that my sktech was made on.
You want to select the same plane that Sketch1 was made on from the FeatureTree to create Sketch2. It sounds like you are selecting Sketch1, which will edit that sketch, not create a new one.
When creating a new sketch, select the plane that you want from the tree to the right, OR select a face on your base extrude feature. Planes can be used repeatedly.
what plane was that sketch made on then? can you post a screenshot of your feature tree?
A face of some object in the model. I don't see any way to select this face except visually, and that's not always possible if it's hidden. (And in any case I need to have a way to select the plane of a sketch without doing it visually.)
Ram, do the tutorials that are included with SolidWorks. You can access those through the help menu. Once you grasp the logic of the software it's a lot easier to figure out.
Already did them. Didn't help.
here is my plane your looking for
This doesn't help me. This is a custom plane that you created separately. (In Insert -> Reference Geometry right?) I don't see an entry like that in my feature tree for my sketch plane.
What plane did you put Sketch1 on? If you added new reference planes, these would show up as well. Can you take a screenshot of your feature tree so that we can see what you have?
I did not add a reference plane, I just made the sktech on the side of some body.
Attached screenshot of example part (not my original project) which shows the problem.
Sketch 5 is the faint circle. It's on the plane of one of the sides of the hexagon. Say I now want to create another sketch on that plane, how would I do that? (In this simple case I could of course select the side of the hexagon again, but what am I supposed to do if it's blocked by a new boss and I can't select it?)
If you create a sketch on a surface, then the surface is later absorbed by another feature, then you can't place a sketch on a surface that no longer exists. In that situation I would recommend suppressing the feature that absorbed or removed the face, create your sketch on the face, then unsuppress the feature. The sketch should then be available to be used in another feature. I don't remember ever having the situation you described, so I can't say for certain that this will work, and I'm at home now so I can't test it, but I don't see why it won't.
Thanks John, and thanks to everyone who helped!
I've had a few of those, I just create a section from that surface and then do normal to surface to continue skecthing.
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