Was real impressed with the Sitivien ST-102, post
#62 above - and surprised I chose the pale green translucent "jade" G10 scales.
Eafengrow EF41 -
Another translucent "jade" G10 handle.
Also in D2, steel, but the blade has a compound grind:
Flat ground at the tip, to reinforce/make it stronger - then hollow ground to keep it thin behind the edge.
Size, open:
Closed:
Lock:
Centering:
centering is great -
just as well, because the pivot bolt head:
although looks adjustable - but with what tool?
EDIT to ADD (Aug/10/2021) -
=================
Unsurprisingly the pivot eventually became loose and induced blade play, but I did not have a suitable tool to adjust the pivot screw.
Found by using the cuff of a common kitchen rubber glove, and my thumb I could tighten the pivot screw.
By sight, blade centering shows the amount to tighten. Of course this is not as workable as an actual adjustment tool.
Of course the pivot screw worked loose again within a day.
Using the rubber glove method removed the pivot bolt entirely - cleaned with alcohol - allowed to dry, then applied some blue Loctite.
Tightened by eye for blade centering (did also have to use the rubber glove on the other side (pinch) to stop the entire assembly from rotating)
and checked there was no play, and will drop shut. Allowing 24 hours to fully cure.
=================
Other interesting point is the lanyard hole:
is part of the G10 spacer.
The compound blade grind reminded me of the Kershaw Hinderer Thermite (3880) "Spanto" point (post
#15 )
Compound grind blades:
Blades - choil to tip the EF41 and the Thermite are the same length - but look at how much longer the handle is on the Kershaw.
Below is pure speculation/guesswork. About a year ago a Chinese brand became popular because it was inexpensive and boasted D2 steel blades with ball bearing pivots. With the unfortunatley chosen name of Doom Blade: this brought many doubts and derision about "Chinese D2" - including a YouTube video that claimed their friend tested the steel and found it was "5Cr" or some such...
Now some months later there seems to be several Chinese brand D2 steel blade folders - including some like the Sitivien ST102 with very high quality action, I would go as far to venture that it is the best action opening and drop shut I have (I've had two samples and they were the same), and the CJRB Feldspar tested by many, including Cedric & Ada on YouTube who found its D2 was only second to Bob Dozier's.
Just looking at the logos - might have some "family" resemblance - and there are some Doom Blade models that look like some Eafengrow models (and I have heard Eafengrow and CH knives come from the same factory - some Eafengrow knives actually have their model with CH)
please remember this is just speculation/guesswork.
EDIT to ADD (Aug/10/2021) -
========================
There may be more than just my speculation/guesswork re: common maker for these Chinese D2 ball-bearing knives:
This image was from an AliExpress listing for the Sitivien ST102 (see post
#62 above)
=============================
This Eafengrow EF41 did not have great action - the drop shut was fantastic - but the all important flip open was not reliable. It works but does not fly open like the Sitivien ST102 or the Ruike P801-SF - but then I am spoiled by those two - they are quite exceptional (that's why I did the videos)
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