Double thumb studs? Likes? Dislikes? Can they be installed after purchase?

OhioApexing

OhioApexing

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As I’ve said in my recent posts, I’m still learning about CRKs. I kinda like the aesthetic value of the double thumb studs, though most (all?) 21s come with a single stud. Being a right-handed, non-ambidextrous guy, I don’t see a need for the double.

What are the physical advantages and disadvantages of the double studs? If I pick up a 21 with a single stud, can I send it to Idaho to have them make it a double?
 
Many find them to balance the look of the knife or that they might need it at some time. I was one of them, but have really grown to prefer the single, since I never use the opposite thumb stud anyway. Lefty's need them.
Yes you can send it to CRK to have them added though it is not a cheap process-shipping both ways +$35. I suggest you wait to have more done at the same time, such as a spa treatment-but that is up to you.
They are pressure fitted so it won't be a do at home project.
 
Double lugs are great. You can add them afterwards for current models. Pictured below is not a current model.

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I just bought BM940S-2....and came to conclusion that I don't like/can't work studs period. Aesthetic aspect of two studs more appealing to me....but since studs are not easy for me to operate, it makes no sense to me to have even one. So no more blades with studs for me. Just my 2 cents.
 
I prefer 2x studs...

I've never gotten used to overcoming the opening detent using those torture domes CRK call thumb studs in the prescribed method. I can flick em open using the topside of my thumbnail, but I only reserve that for when I've greased the pivot and re-assembled to check to see if it's free moving.

It's just me, I'm sure-- or maybe I have more nerve endings than normal in my thumb pads...I don't know. :confused: But I'm not a fan of single studs for that reason...:(

HOWEVER...

with the 2x studs I "pinch" on both sides of the stud with the end of my thumb on presentation side + the end of my index finger on the obverse side and use the frame to kinda isometrically push against with my finger pad + thumb pad to overcome the detent and it's quite pleasing. Plus it's a very controlled movement... which I am a proponent of opening a knife deliberately and only when you need to cut something... so that's GREAT for my usage.

So, it's like night & day for me...to the extent I won't purchase a single stud CRK without shipping back to the mothership for a pressfitting of dubs....ENJOY! :)
 
Either you pay for double lugs up front or pay to have them installed later on. CRK will not put double lugs on BG42 or ATS-34 blades. Don't really know if they'll do the older style blades since they don't produce them anymore.
Being left handed living in a right handed world, having double lugs is better.
Better to have it and not need it than need it and not have it.
 
Double studs are great. I can middle-finger flick the knife open with the off-side stud whenever I get tired of torturing my thumb with the proper opening method. :)

As an added bonus, they help me eyeball if I'm holding the knife level when sharpening.
 
Ajack60 said:
Either you pay for double lugs up front or pay to have them installed later on. CRK will not put double lugs on BG42 or ATS-34 blades. Don't really know if they'll do the older style blades since they don't produce them anymore.
Being left handed living in a right handed world, having double lugs is better.
Better to have it and not need it than need it and not have it.
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They won't take the chance on discontinued blades regardless of the material of the blade. The replacement blades would have to be pulled from archive if something went sideways..The blades in archive are reserved for warranty replacement so they are careful not to deplete that stash.
 
I have had both and prefer a single stud. My inkosi has double, and while i don’t hate it, I don’t use the other one... so I kinda wish it were a singe.
 
bhyde said:
They won't take the chance on discontinued blades regardless of the material of the blade. The replacement blades would have to be pulled from archive if something went sideways..The blades in archive are reserved for warranty replacement so they are careful not to deplete that stash.
Click to expand...

That makes perfect sense, I was thinking even the regular Sebenza's with S30V would be out of the loop. So, would a Classic or early 21 in S30V be able to get double lugs installed? Has the blade style changed enough to exclude the eaelier 21's with S30V ?
 
Ajack60 said:
That makes perfect sense, I was thinking even the regular Sebenza's with S30V would be out of the loop. So, would a Classic or early 21 in S30V be able to get double lugs installed? Has the blade style changed enough to exclude the eaelier 21's with S30V ?
Click to expand...

I am not completely sure on that..but I think that the classic and early 21's shared the same blade so it shouldn't be a problem.
Personally, I have found the access to the lockside thumbstud to be minimal enough that it hasn't helped me open with the off hand so I don't go for dual studs despite being able to walk into the shop and have it done. Others have differing needs though.
 
Ajack60 said:
That makes perfect sense, I was thinking even the regular Sebenza's with S30V would be out of the loop. So, would a Classic or early 21 in S30V be able to get double lugs installed? Has the blade style changed enough to exclude the eaelier 21's with S30V ?
Click to expand...
Not an authority on this, but I believe they can replace Classic MM with 21, so I think they could do the double thumb studs if they cared to with the worst case scenario being you landed up with a S35VN blade.
 
Basedlarrydavid said:
As I’ve said in my recent posts, I’m still learning about CRKs. I kinda like the aesthetic value of the double thumb studs, though most (all?) 21s come with a single stud. Being a right-handed, non-ambidextrous guy, I don’t see a need for the double.

What are the physical advantages and disadvantages of the double studs? If I pick up a 21 with a single stud, can I send it to Idaho to have them make it a double?
Click to expand...

I am fairly ambidextrous and seem to prefer to use my knife in my left hand for some things and right hand for others. I carry a right handed knife with clip set up for right handed carry in my left pocket.

I personally would love to see double thumb studs become standard across CRK knives. I don’t understabd what advantage you gain from having only one stud. Also what happens if a right handed person breaks or is doing something else with their right hand. A left handed thumb stud could sure be handy.

You can get crk to instal the double studs for a fee. As it stands my small 21 is smooth enough that I can middle finger flick my right handed small 21 with ease.
 
Lapedog said:
I personally would love to see double thumb studs become standard across CRK knives. I don’t understabd what advantage you gain from having only one stud. Also what happens if a right handed person breaks or is doing something else with their right hand. A left handed thumb stud could sure be handy.
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I think the design concept is so nothing catches when pulling the knife from your pocket. Sebenza thumb studs are not particularly troublesome, but I have some other makers (with doubles) that catch every time and open the blade unless you adjust for it.
 
I like the double lugs. I can open my knife with either hand and never find it in the way so I like it being there. I also use it as a rough index when sharpening. I lay the blade down until the lug touches the stone then raise just a hair to clear it and sharpen away.
 
I like the option of either side opening using double studs on all of my non - flipper folders. Many other manufacturers offer them as standard equipment. And like many other emergency items, I would rather have the option of opposing side operation and not need it - rather than the opposite.

Like what if my right hand was disabled, pinned or otherwise unable to operate that right thumb stud? Being too worried about things that might never occur? That’s fine by me. These blades can be pretty critical emergency tools and I want full operational ability under possibly adverse conditions. Be well all.
 
Just my opinion. It makes a Sebenza a bit more unique but doesn’t make that much of a difference to me.
 
I have added double lugs after purchase for half of my sebs. I am not a lefty but after royally screwing up my right thumb I have carrying one in a belt pouch on my left side. Getting used to the left hand carry and use has taken some getting used to.

So, I for one like dual lugs.
 
I'm a lefty and prefer a single thumb lug on a Sebenza. The dual works better on the Inkosi (due to the deeper cut out on the lock side).
 
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