Greetings all, I am a recently joined member, so if I unintentionally cross any lines, feel free to inform me.
The photos in this post were all taken by me.
My personal experience with the Extrema Ratio
MFO a.k.a.
133MFO.
I bought an Extrema Ratio
MFO.
Upon opening the box, I was very impressed with the color, finish, shape, ergonomic feel, weight and incredibly high degree of blade sharpness of the knife.
In fact I love this knife.
However..... with much regret and very sadly, I have to sell it, as in my opinion it has a potentially dangerous design flaw which I will explain.
When I bought it, I was aware that it was a "liner lock" and additionally had a
"secondary safety lock" (
red switch) which was a major factor in me buying the knife.
Unfortunately nowhere on the Extrema Web site does it reveal that the "secondary safety lock"
only works/functions in the open blade position and
not in the closed blade position.
This is for me, this where the design flaw is, in that besides thumb studs on the blade.... there is a rather large thumb "flipper" that protrudes from the upper spine of the handle....
if the
MFO is put into a back pack, a waist pouch a.k.a. fanny pack or even clipped inside a pants pocket.... (I have done all 3)
and the "thumb flipper" is even slightly bumped or pushed against anything in the pack, the pouch or even in your pocket....
the blade opens too easily!
Even just a millimeter is too much and in my opinion this is a dangerous accident waiting to happen.
This knife (MFO) has absolutely and unbelievably no detente in the closed position, if you take your thumb and index fingers and gently pull the blade out from the closed position even just a millimeter,
it will stay out and not pull back in.
ANYTHING that comes up against, bumps up against or presses the over-sized "thumb flipper" causes the blade to come right out from the handle.
I cannot put this knife into my back pack, waist pouch or even my pocket... and then reach in at any given point in time and get a disastrous bloody surprise to my hand or fingers.
If this knife were designed to have the "secondary safety lock" work/function in the closed position... there would be no design flaw in my opinion.
I wrote to Extrema Ratio and explained this to them and told them that if they ever re-design the MFO I'd buy it again.
I really "love the knife", I hate like H*** to have to sell it, but as it is currently designed and how "scalpel sharp" the blade is, I am unwilling to carry it unless forced to carry it in a sheath "for my own protection"!?
I own an Extrema Ratio Fulcrum C. which is superb and I'm happy as a clam with, but sadly and regrettably... I have to say goodbye to this
MFO.
Hate to give a negative review on my first posting, but this is my experience with this knife.
I have to be able to confidently and safely throw a folder into my back pack, waist pouch or even down into my pocket and not worry that my finger/s will be sliced off when I reach in to get it either in the light or worse... in the dark.
Lastly, I have small hands, this knife fits my hand perfectly and it's my opinion that this short handled
MFO is best suited for a person/operator with small to medium small hands, with a large hand your pinky will be off the end.
I live in N.Y.C. where the knife laws are the most archaic and primitive in the U.S., I have to be able to carry a folder inside a pack, pouch, pocket and not reach in and get a bloody surprise.