Read about this project at https://warmachinellc.com
In this the 2nd video of the AR15 gasblock machining series I was forced to rethink the operations of the previous video because the main bore hole was not guaranteed to be concentric to the drilled hole which is what the reference point is to all other machining operations. I came up with a slightly modified process which should work well and this video is addressing the issues early before they lead to a lot of wasted time and material down the road. I also had to go back and re-square my fixture plate because it was not square from where I machined it when the machine was out of tram. I was also able to do some machining using the newly squared fixture plate but that will be in the next video.