Extrude 'Did not regenerate properly'

nick_rossi

Hi there,
I am modeling a part around the centerpoint of a circle, and it has been quite painful. I have 'posts' drawn up that need to be the same thickness as the outer ring, but when I try to extrude the sketch I get an error that it did not regenerate properly. The shapes don't seem to be closed now, but when I drew the first one, it extruded as it should have. Any insight would be much appreciated



I also notice there are multiple points around the centerpoint that I have been using as a reference that I cannot delete, which is quite annoying since I am using construction lines based off the centerpoint and I have to zoom all the way in to ensure I am snapping to the correct point.

Jason_S

Welcome to Onshape Nick!

It is good CAD practice in any system to add dimensions, constraints, or other relationships to your sketch entities such that every sketch entity becomes black (signaling your sketch is fully defined). A good check to see what is left to do is dragging sketch entities around, seeing how you need to define the rest of your sketch entities. I, personally, never close a sketch that is under-defined.

Like Philip pointed out:
In order to make solid bodies from you sketches, you must make closed sketch regions. Here is a quick clip of me using the coincident hot key (i) to make one of your instances a closed region. You know the region is closed when it goes grey.




Again, Welcome and happy CADing

Jake_Rosenfeld

Hi Nick,

If you don't mind, it would be easier to help with your issue if you post the link to your document in this forum thread.

nick_rossi

Here is the link to the file. 
https://cad.onshape.com/documents/56d2eb8a8656033d40b59332/w/ea7292c77ecc17191b1f63ae/e/996061c3554d09587b8c3617

philip_thomas

In order to extrude the sketch, there has to be one or more closed regions - none of the profiles is closed (see images).


There is a cool trick for finding out where the opening is - simply keep diving the region in half with lines - one half will shade (closed), the other will remain unshaded - divide the unshaded region until you have found the junction that is open.

Jason_S

Welcome to Onshape Nick!

It is good CAD practice in any system to add dimensions, constraints, or other relationships to your sketch entities such that every sketch entity becomes black (signaling your sketch is fully defined). A good check to see what is left to do is dragging sketch entities around, seeing how you need to define the rest of your sketch entities. I, personally, never close a sketch that is under-defined.

Like Philip pointed out:
In order to make solid bodies from you sketches, you must make closed sketch regions. Here is a quick clip of me using the coincident hot key (i) to make one of your instances a closed region. You know the region is closed when it goes grey.




Again, Welcome and happy CADing

nick_rossi

Thanks for the responses! I have got it squared away now. I figured that the shapes weren't closed but not sure if there was an easy way to fix. Both are good methods, the coincident method is more familiar as it is similar to the AutoCAD command. Cheers!

3dcad

Usually Onshape sketches are good to go using auto-constraints ie. snap to existing points. But fixing the gaps is problem when importing stuff, it would be nice if one could box select two or more points and hit coincident. It's very laborous to zoom in and select point by point.

john_mcclary

3dcad said:

Usually Onshape sketches are good to go using auto-constraints ie. snap to existing points. But fixing the gaps is problem when importing stuff, it would be nice if one could box select two or more points and hit coincident. It's very laborous to zoom in and select point by point.

Well they sort-of have that functionality, They just need to recognize endpoints in window select. But that is not always desired maybe that would be a good place for "Hold shift while window selecting to include endpoints"

https://youtu.be/XzyLoIiuKew