Having previously made a handle for a saber saw blade to use as a small pruning saw:
https://www.printables.com/model/331613-saber-saw-blade-handle
I found out that though it does pretty much what I wanted it is a pain to carry around. It's pretty much hopeless putting it in a bag or pocket as the teeth on the saw cut and get tangled very easily. So, a sheath to carry it around seemed like a good idea.
I made it in two parts that way a) it's easier to print and b) I would only have to modify the lower part if ever I changed the model of blade I use.
I made the fit between the two parts size on size so a bit of filing might be required to get the two pieces to play nice.
For what it's worth I've glued the two parts with Loctite HY4070 hybrid adhesive as I had it on hand but I think pretty much anything that glues PLA will do.
The author marked this model as their own original creation.