Did you try to copy my username....
look at my laser its faster but you can use the same consept to make it focused and cut quicker just put this id:1422938 into the search bar
put 2 pixles of the accelerator next to the portal out to make the beam 1 pixle think making it compact and more focused :)
cool +1 but it needs to be slightly faster as alot of the beam dies off befor reaching the barrier