Behind the edge database!

[Nate]

It's cool to see this thread again, thanks SG!

I've noted that my Urbans (standard and K390) seem to be among the thinnest bte in my collection, along with an old gray plain edge Calypso Jr. I also have two of the Baby Horn sprint and they're both very slicey for production blades.

The PITS I just picked up also appears to be fairly thinly ground, but I think part of that is due to the egde angle being a bit over 20°. It still cuts well, but it will get reprofiled.

[Evil D]

I wonder how these numbers have been effected since moving from hand ground bevels to robots grinding the edges? Bevels seem more consistent these days than they were 10 years ago but also sometimes seem to be cut at much higher angles than 15 degrees per side, which as Nate pointed out can potentially change the measurements compared to an older hand sharpened model that has a lower ground bevel.

[Nate]

^That's a good question, I may break out my calipers sometime soon and look into it to see if there's an obvious difference I can spot.

I've found in the past though that taking these measurements is a finicky business at the best of times, so I try not to use them as more than a general guideline. It's easy to be off by a few thou either way when you're trying to eyeball and not using a vice, but I have a decent bench vice now. I've also been fooled in the past by measuring the bevel on one side only to realize that the other bevel is at a different angle, which makes it even hard to get a clean reading. I'd expect that to be improved by the robotic CQI, but I'm not sure if all of their manufacturers are using it.

[Evil D]

I've found in the past though that taking these measurements is a finicky business at the best of times, so I try not to use them as more than a general guideline.

This idea is really only as good as the participation. The more measurements we get for the same models the better we can average the numbers and at least have a ballpark to go by.

[Sharp Guy]

I have a few more Delicas to add since my last post in June.

As previous, the format is as follows:

Behind Edge / Spine (above hole and just in front of the plunge grind) / Blade Stock

Units are in decimal inches.

Delica WC HAP40 Sprint - .020 / .091 / .096

Delica SNK Exclusive-Red G10/TiCN - .022 / .090 / .0965

Delica V-TOKU 2 Sprint - .019 / .092 / .096

[elena86]

Just measured my LW N690Co Urban after reprofiling - 15 dps. Very thin behind the edge : 0.017 ! Keep'em coming guys !

[glutofknives]

Does anybody have a bte thickness for a spyderco proficient? I’m in the market for a slicey wood cutter and I think it might be the one for me.

[Cambertree]

Here’s some measurements I’ve taken from stock factory edges. (Behind the edge thicknesses were averaged from three readings.)

Bradley Junction:
2.5mm/0.097” thick stock, 0.5mm/0.020” BTE,

Urban K390:
2.75mm/0.109” spine, 0.35mm/0.015” BTE

Endura HAP40:
2.70mm/0.106” spine, 0.55mm/0.023” BTE

Manix 2 52100:
3.05mm/0.121” spine,
0.57mm/0.023” BTE

Para 3 Maxamet:
3.53mm/0.139” spine,
0.54mm/0.021” BTE

Paramilitary 2 Cruwear:
3.48mm/0.137” spine, 0.54mm/0.022” BTE

Military Lefty:
3.46mm/0.136” spine
0.58mm/0.022” BTE

[Evil D]

Here’s some measurements I’ve taken from stock factory edges. (Behind the edge thicknesses were averaged from three readings.)

Awesome! I'll add these to the list!

[ZrowsN1s]

Bumping because I love this thread :D

[The Meat man]

Bento Box Shop M390 Delica exclusive:

Spine: 0.095"
Edge thickness: 0.027"

[Evil D]

Bento Box Shop M390 Delica exclusive:

Spine: 0.095"
Edge thickness: 0.027"

Added

[DukeNiemand]

Police 4 K390:
Spine - 0.105"
BTE - 0.023"

PM2 Maxamet (2019)
Spine - 0.136"
BTE - 0.021"

Mule Team 26 PMA11
Spine - 0.114"
BTE - 0.20"

Military Rex45
Spine - 0.140"
BTE - 0.022"

PM2 Forum Knife 2018 S90V
Spine - 0.136"
BTE - 0.021"

[attila]

I have some unsharpened Spyderco blades, so I measured them. I have noticed inconsistent edge grinds, so I didn't just take an average BTE value for each. The numbers that follow are thousandths of an inch BTE at 1/4" from the ricassso/at the middle of the edge/1/4" from the tip, followed by stock thickness.

Original Swick
0.022/0.028/0.026
stock thickness 0.155

Brown XHP Manix
0.022/0.027/0.029
stock thickness 0.125

G10 ZDP Stretch 2
0.023/0.025/0.025
stock thickness 0.111

Kapara
0.020/0.020/0.020
stock thickness 0.115

PMA11 Mule
0.016/0.018/0.019
stock thickness 0.119

Rex 45 PM2
0.019/0.020/0.022
stock thickness 0.145

Rex 45 Para 3
0.018/0.019/0.018
stock thickness 0.145

Lil'Native backlock #1
0.019/0.019/0.020
stock thickness 0.126

Lil'Native backlock #2
0.021/0.020/0.022
stock thickness 0.126

HAP40 Jazzlica
0.018/0.018/0.016
stock thickness 0.096

Super Gold Delica
0.018/0.018/0.018
stock thickness 0.096

I also measured my K390 Urban, blue P.I.T.S., and KC exclusive Native 5. They've been sharpened a little, and while it's not valid info for entry into the factory grind BTE database, it's interesting info.

K390 Urban
0.015/0.014/0.015
stock thickness 0.105

Blue P.I.T.S.
0.015/0.015/0.017
stock thickness 0.119

Smooth Green G10 S90V Native 5
0.019/0.019/0.021
stock thickness 0.126

[elena86]

Bento Box Shop M390 Delica exclusive:

Spine: 0.095"
Edge thickness: 0.027"

Sooo thick behind the edge

[Pelagic]

Anyone measured a Caribbean?

[Evil D]

Anyone measured a Caribbean?

I bought a caliper set recently but I'm really not impressed with the quality or I'd measure mine. I plan on getting a different one and I have a new Caribbean in the mail so I'll work on this, at least for the SE version, not sure if anyone is interested on SE numbers.

[SteveMidwest]

The numbers that follow are taken BTE at 1/4" from the ricassso/at the middle of the edge/1/4" from the tip. Followed by stock thickness.

Manix 2 CPM Cruwear C101GPCW2 Black Smooth G10
Date Code (ES)

0.023/0.026/0.028
Stock Thickness 0.125"

Manix 2 CPM-S110V C101GPDBL2 Dark Blue (Blurple) G10
Date Code (BR)

0.022/0.023/0.025
Stock Thickness 0.125"

[Cambertree]

I average my BTE reading similarly to Atilla, from 3 readings - about 5mm in front of the plunge line, middle of the blade and about 5mm back from the tip.

Urban AEB-L
2.75mm/0.109” spine thickness - just in front of plunge line.
0.016”/0.017”/0.020” BTE, call it 0.018”.

[bbturbodad]

I have these 2 to add...

Urban K390
.1075 Spine (in front of plunge line)
.013/.011/.012 BTE ~ .012

Chaparral LW - CQI
.0775 Spine
.016/.017/.016 BTE ~ .016