Hi John, this tends to work reliably normally, but sometimes it happens you trick yourself into thinking it's not working, usually when you have multiple densities loaded. Make sure that you: 1) have the right density active when you do the erasing 2) don't have other overlapping densities visible (typically a copy of the same density, since the erasing procedure generates a copy it works on rather than working on the loaded original) Since they are identical, you wouldn't notice that your erased volume has changed. Best J ________________________________ From: Chimera-users <chimera-users-bounces@cgl.ucsf.edu> on behalf of JOHN FLANAGAN <jmf27@psu.edu> Sent: Thursday, March 21, 2019 1:04 PM To: UCSF Chimera Mailing List Subject: [Chimera-users] (no subject) Hi I was trying to use the volume eraser to remove density outside of a sphere on my em map. When I enabled keyboard shortcuts and then used the shortcut command eo what I got back was an identical copy to the original, i.e. no erasure. If I used es then everything in the circle was erased as expected. Am I missing something? Cheers John John M. Flanagan PhD. Professor Department of Biochemistry and Molecular Biology Penn St. College of Medicine Milton Hershey Medical Center Hershey PA, 17033