Having converted my old Elliot Miller into a CNC VMC, i began to scare myself with the prospect of throwing an end mill across my shop (not if but) when an NC file goes renegade. For this reason i have retro fitted a machine guard and whilst i was at it i made one for my lathe as well.
hope they give ideas.
The frames have been made from 1" steel angle and flat 1" bar x 1/8th and clad with plexiglass (perspex or similar acrylic)
Some with a keen eye will notice the lathe guard has no plexiglass in it yet.