This is a very basic sheath I designed for my SA80 bayonet. During house moves, I lost my RAF issued scabbard/sheath. As it's now decorative given I left the RAF some years ago, I decided to make a very basic scabbard to keep it safe.
Model is in 3 parts, the back, middle and front. All holes line up, all you need is 8 x 12mm M3 bolts. To be honest superglue on it's own will do, but I like the aesthetic of the bolts!
Easy enough to split the model into 3 if you want to modify in anyway. I'm not a designer by any standards, but this is good enough for what I need! :)
It may not be pretty, but it works!