Galling is a severe form of wear that occurs when metal surfaces slide against each other under high pressure and friction.

Do it yourself CNC machines can be never ending projects ... The frame is made up of galvanized steel stock, which makes it much stronger than many DIY CNCs out there. [Mario] had a friend ...

Gun issues aside, [Justin]’s been CNC milling his own gun parts for quite a while. We’ve been a fan of his work simply because of the technical challenge that this sort of milling presents.