There are no particular difficulties in manufacturing diodes

  • It is a difficult part to figure out how to make them, which semiconductor materials, deposition, and heat dissipation. But as I said some laser pointers can cause a little damage to your eyes, so if you want to get one or make one, make sure you don't point to anyone's eyes. Even if you have a friend who points out that there is a laser in your eyes and thinks it is interesting, it is not the case, that is, the error is not correct. Just tell them how much variation you have.