Blade Sheaths for Mora 106 & 120 Straight Knives

The sheaths that come with the Morakniv straight knives is pretty terrible.  You can replace the stock sheaths with these.  Grab some waxed thread for leather sewing and some leather sewing needles and sew the three parts together with a saddle stitch. 

This project is a fun mix of traditional and modern and provides an opportunity to learn a new skill =D

Assembly

Here's a few saddle stitching tutorials

• Ace Leather (1:17)
• JH Leather (3:31) - you don't need to wax your thread if you got waxed thread.  also shouldn't need an awl.
• Pured Leather

Generally, though, the idea is to:

1. Measure out a length of thread equivalent to around 4x to 5x the stitch circumference.  That should be around 80cm or 32 inches.
2. Thread a needle onto each end of the thread.  Lock the needle in.
3. Create a sandwich of the three parts: side A, welt, side B
4. Run a needle through the hole at one end of the stitch run (the hole at either side of the blade opening).  Balance your thread so that there's the same amount on either side of the project.  You could backstitch here if you'd like.
5. Saddle stitch around the circumference until you reach the other end.  Backstitch.
6. Cut the extra thread leaving a small amount.  Melt this small amount with a lighter and press into the stitch.

Prining

Print in TPU (I haven't tried TPU for AMS but it would probably work as well).  Make sure you don't try to feed the TPU through your AMS, run it off the spool holder.

Print each of the three parts (side A, welt, side B) flat side down.  Use 3 or 4 walls.  Infill shouldn't matter.

There's an optional "assembled" version.  I don't like this version since I think it looks better sewn together and this version ends up feeling weirdly stiffer.  If you do chose to print this version, I found it prints best with the mouth of the blade opening laying on the bed (so that the tip of the sheath is pointing straight up).

BOM

Component	Qty	Image
Waxed thread for leather, 0.8mm Amazon Weaver Leather RM Leather	~1m or 1yd
Leather/harness sewing needle (John James L3912-002) #18 (1/0) 1.09mm Amazon Weaver Leather RM Leather JJ Needles	2x
Welt	1x
Side A	1x
Side B	1x