Thanks for playing. You don't really need to place the cubes while jumping. I'm curious how you did it, though. You could have done it differently than what I intended.
Pretty close, except you can press the button while crouching on the piston elevator and you can drop the cubes from the raised grating area. Cubes drop in height over time when dropped into floor portals so you just have to remove the portal from under them when you think they won't bounce out of position when they hit the ground.
Well, this one was a real thinker! I sat there with two cubes on the buttons by the door for the longest time wondering "well, now what?" Until I finally realized that I had used the wrong portal to get the second cube out. The rest, for me, was easy enough to figure out, but the execution was pretty difficult. What a nice puzzle, with varied elements and required techniques that you don't see very often.
Thanks for all your kind comments. On the downside, this is gonna be a tough act to follow...
Take your time. I have a few more of your maps to play through. I'll see you on the other side, and Good Luck!