Nice puzzle! With that many cubes and bootstrapping I could see this being done quite a few ways. My end result was never actually needing portals for the lasers and never needing the bootstrap laser. I watched your solution afterwards and even that has multiple ways you could solve it using parts.
I have no thoughts on how you would prevent many of these, but still a very clever map!

https://youtu.be/8Emx5mePOYc

Bug-exploiting solution: https://www.youtube.com/watch?v=EPrnD4jrTOU

Nice laser map, and i think it's a medium difficulty; nice use of the reflectors.

Funny thing, the floating cube glitch, hehe.
By pure coincidence I found another crazy break.
But it needs some tries to realize it.
unclip the laserpanel with just one cube: https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=857491630

@lapicidas
Ah, that's right! I took some unnecessary steps. Nice job on simplifying my solution.

Yeah, you do the floating cube glitch by stacking two cubes, and tilting the one on top slightly downwards towards the fizzler laser reciever, then hitting it with the laser. :)

@Veldrax
Many thanks for your comment at youtube.
I tried to replay the way just as you described it, but I have problems with the second step.
Floating cube glitch only works as long as a laser is directed to the cube, or isn't it so?
How can you bring the remaining cube upstairs? I like to learn new tricks!!
Anyway, I like your Solution -
- redirecting the laser down to the floor to open the fizzler. I used the glasspanel for it,
so it was easier for me with the lightbridges.
https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=856767242

Part 2
Take the faith plate back to the angled panel and grab the boostrapped cube through the portal and get all three upstairs. Put a cube in the laser, and turn it face down. Put a portal on the inert angled panel and bring the other cube down with you. Redirect the laser to deactivate the fizzler. Cross through it and put a portal for the light bridge, and go back through the angled panel. Bring the remaining cubes down and into the fizzler room. From here on, you just want to do what I here: http://imgur.com/zDmwFgE

Part 1
Bootstrap a cube again. Floating cube glitch another, and bring the remaining cube upstairs, redirecting it towards the angled panel. Jump down, portal to deactivate the fizzler and bring the cube you left behind upstairs as well. Go back to the other topside cube, and redirect the laser from the angled panel towards the far wall in the room behind the fizzler. Light bridge to the faith plate, and put one portal downstairs, next to the boostrapped cube, and the other portal on the angled panel.

Hey, boss. Found another solution again, and I don't think it's intended. It's also pretty complicated. Will post it below, since the comment was too long.

I like your puzzles! Strains my brain. Thumbs up.

I found another solution, a little bit easier than the original.
Although my way to the faith platform is needlessly complicated.

Attention spoiler: following video shows a solution.
https://youtu.be/BYrmTEIcVFo

Actually, the floating cube glitch doesn't really break the map, I think. But yeah you found an unintended solution, so thanks! I have just changed the map to fix the break.

Woo! First to solve it, but not sure I did it the right way.

I used the floating cube glitch to make a cube stick to the button and deactivate the fizzler at the same time. This way you can bring the bottom cube with you to the second floor (the last one is boostrapped and activating the angled panel), redirect the elevated laser towards the raised angled panel, use the surface for a portal, connecting the light bridge and the angled panel. Now you can just use the cube that was originally made to float to redirect the laser coming out of the light bridge portal to deactivate the fizzler, cross through the portal yourself, take the lidge bridge to the glass floor, deactivate the fizzler again, then jump to the middle of the room and pop a portal behind the deactivated fizzler and run to your goal. Never used the faith plate.