Thanks Bro, you are TOP

Hahahah that trick with the cube falling behind the ennemy, nice one ! Personnaly I've glitched so much that I've done the star before finishing the level. Then I've found that putting the laser receiver on the roof tiles (near the top of the entrance) was a good solution :D

So that's the intended way to solve this, I tricked my way and before even knowing I already had solved the puzzle in another way, without even using the red laser. The thing you did to the get star can be done also where the fans are. I put a cube on the moving ball and jumb there before the ball got in the fan. Then when you are up there you can just jump to the switch

this puzzle is very big but you beat it section by section so it's not that hard, and the star is easy too

0:30 hah, I never realized that white mine makes a turn there. I solved this puzzle without using that one at all.