BK 7 & BK9 sheaths

F

frank k

Joined
May 8, 2001
Messages
2,548
I like the sheaths for my BK7 and BK9, but they fit the blades a little too loosely. I would like to take the kydex liners out and form fit them to the blades. My question is how do I get the liners out?

Also, dose anyone know the specs for edge thickness and bevel angle?

Thanks!


- Frank
 
The liners have a very tight fit in the sheaths and are nearly impossible to take out without wrecking the entire sheath. Are the blades rattling in the sheath? If so you can take a 1" x 1" square piece of nylon webbing , place it at the sheath opening and insert the blade. The tip will push the webbing to the bottom and capture it when the knife is in the sheath and prevent it from rattling around. Other than that, I'm not sure much can be done. If it's really bad, you might want to email Will Fennell wfennell@rjsonline.net to see if he can send you a replacement sheath.
 
Thanks Dexter,
Yes, the blades do rattle in the sheaths. I thought about sticking something in the sheath, but if it dose not work right, I might not be able to get it out again. It seems that form fitting the bottom of the liners would do the trick, so I was hoping that I could get them out somehow. Thanks again.


-Frank
 
Originally posted by frank k
Thanks Dexter,
Yes, the blades do rattle in the sheaths. I thought about sticking something in the sheath, but if it dose not work right, I might not be able to get it out again.

Click to expand...

Frank - you're welcome. You can always take a coat hanger and fish out whatever you put into the sheath if it doesn't work.
 
Thanks again Dexter,

I have been looking at the liners with a flashlight, and it seems like the liners are attached to the sheath with a dab of glue on the front near the top. I think I could work the glue loose with a butter knife, but I don't want to risk wrecking the sheath.


-Frank
 
That dab of glue was the only thing holding the liner in on mine. I discovered how easy it was to remove the liner after accidentally sheathing my 7 between the liner and the sheath. [edit: wanted to add that there was no damage to the sheath, and I can take the liner in and out with my fingers-I like being able to do this] You could probably stick a flathead screwdriver in there, and work it apart...or just use the knife-worked for me:p Course your sheath may have more or less glue than mine-no way of knowing.
Because of the way the liner is folded, it might be easier to make your own liner from a piece of kydex and glue it in there than modify the factory one. I've never made a kydex sheath, but have worked on a couple to make them fit better. The factory liner seems like it would be really hard to do much with.
Here's both sides of my BK7 sheath's liner.
 
Thanks OwenM!
Thanks for posting that pic, it helps me alot.
Once I get the liner out my plan is to heat up the back side of the bottom of the liner and form fit the kydex to the tip of the knife blade. With a little luck, I hope this will hold the tip of the knife securely and stop the rattling (although the kydex is pretty thick and my be hard to mold, I don't know since I have not worked with kydex). If I only work with the back side of the liner, the sheath will look the same from the front. At least that is the plan.


-Frank
 
Update - I got the liner out of my BK9 no prob (glue was not holding very well, just peeled off of sheath). My BK7 is held a little tighter (won't peel off) but I am sure I can work it loose easily. I need to get ahold of a heat gun, but the liner seems like it can be form fitted (just pinching it between my fingers holds the blade tight). Thanks again Owen!

Dose anyone know about the edge thickness/angle specs?

Has anyone measured the edge thickness of their BK7 or BK9?


- Frank
 
I finally got around to fixing the BK9 sheath today. I used an iorn on low heat and a damp rag to heat the Kydex with out melting it. When the Kydex got soft, I pressed it into shape by hand. I had a little trouble getting the Kydex to lay flat, so I cut a slit about 1.5" long on the clip side of the liner. In retrospect, I think that I could have worked the Kydex into place without the slit(I will try that when I do the BK7 liner).
I only heated the bottom rear of the liner, so that it would look the same when I put it back in the sheath. After some trial and error, I got the liner tight enough to hold the weight of the knife upside down (although it can be shaken loose). The liner only grabs the last 1/4-1/2 of the blade, and it dose not feel overly tight, just a little pinch when the blade gets to the bottom of the liner. About 3/4 of the rattle is gone (the blade still wiggles a bit when shaken, but I doubt I will notice it when carrying the knife).



-Frank
 
Originally posted by frank k
I had a little trouble getting the Kydex to lay flat, so I cut a slit about 1.5" long on the clip side of the liner. In retrospect, I think that I could have worked the Kydex into place without the slit(I will try that when I do the BK7 liner).
Click to expand...
Congrats on diving into the world of sheath mods. Sounds like you just needed a bit of foam and pressure to really fit the liner to the knife tip. Your idea to have the liner grasp just the tip of the knife is right on the money. Check out this thread for lots of good info on working with kydex and presses.
 
Originally posted by RokJok
Congrats on diving into the world of sheath mods. Sounds like you just needed a bit of foam and pressure to really fit the liner to the knife tip. Your idea to have the liner grasp just the tip of the knife is right on the money. Check out this thread for lots of good info on working with kydex and presses.
Click to expand...

RokJok,
Thanks for the link!

I did use thumb pressure to fit the liner, cooling it at the same time with a wet towel (the bottom edges of the liner touch with the knife inside except for the corners). The foam idea would probably worked better, but I don't know how I would have been able to get it attached to the inside of the liner without opening it up. I was thinking of filling some of the space near the tip with the silicone caulk I am planning to re-glue the liner to the sheath with. Thanks again!


-Frank
 
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