A laser puzzle. I think this one is a bit tougher than my first two maps: medium to hard difficulty.

When constructing the map, it looked quite messy with all the antlines and signages, so I took away the ones from the exit door.
The exit door will open as soon as all laser catchers are activated and a cube is on the button next to the door.

Enjoy and please leave a rating and a comment

Edit: Changed one portable surface to deny an exploit.

Click here to download dw chamber 3

Click here to download dw chamber 3

This was a little harder than your previous efforts. With so many cubes and relays/catchers it took a few minutes to sort things out, but it was never confusing. I'm not sure I did this one right, though. After playing around with what I thought was the intended solution, I decided it couldn't be done that way and just moved the cube by the door over so I could use the portable surface behind it. That made the solution much easier. Also, I wasn't sure why there was a portable surface behind the dropper in one of the cube rooms -- never used it.

Not a fan of laser puzzles, but this one was better than many. Thanks for mapping.

@RogerL: I think I've fixed your exploit with the portalable surface.
I apologize for the portalable surface behind the cube dropper. My mistake: there's no use for it and if I see another reason to edit the map I will fix this "beauty issue". Thank you for pointing it out