# Object disappearing and origin points

I highlight an object in Object Mode but when I click TAB to go into Edit mode, the selected object always disappears. However when nothing is selected, the middle tracks disappears after TAB. What have I done wrong?

I created two railway tracks with one Mirroring the other. However the origin point is not in the middle of the two rails. Could you please explain: - why this is the case, and how it ended up there? - where the origin point ought to be and how can it be corrected?

I am assuming the origin points of all the objects in the scene are out of whack with each other? Is there anyway to clean up the whole mess?

I am a beginner and I am extremely confused with origin points - I have played around with "origin to geometry" and other "fixes" but I always end up with objects getting displaced or creating more mess. Or when I switch betw object and edit modes, I get objects moving or disappearing. Any advice to a noob would be much appreciated.

• Welcome to that site. Great first answer! To take a look at how I edited your post and made the tab button, you could click on the "edited" link at the bottom of your answer, or look here. Feb 4 '16 at 4:50