Top row: OLFA SK-9, OLFA LA-X, Stanley FatMax 10-777, Stanley FatMax Extreme 10-815, Stanley Titan RB 2-10-122
Bottom Row: Sears 9488, Stanley 99E, Sheffield 12113
I personally purchased and tested all these knives. I broke my leg 8 weeks ago, and in my pain killer induced haze and my stir crazy condition, I ordered far too many options!
Note, if you use the links in this post to buy one of the knives I will receive some compensation from Amazon. Frankly, I'm just curious if anyone will actually ever do that!
The Problem:
I've been using "standard" box cutters like the Stanley 99E and Sears 9488 for more than 40 years. And they have been fine and I haven't had much trouble with them. But the last couple years my use of them has changed. Now I frequently use them about once or twice a week to cut down shipping boxes to put them in our recycling container. And I have found two problems. One: changing the blade is a pain because I have to get a screwdriver. Two: we don't always close the blade all the way and leave it dangerously protruding in the drawer, just waiting to nip us when we reach for it. This style knife has multiple detents on the switch that moves the blade back and forth, and with casual use it is just too easy to miss pulling it all the way to the retracted position.
So, I decided to find a better replacement.
The OLFA Knives
The OLFA SK-9OLFA 1086095 SK-9 Self-Retracting Safety Knife With Tape Slitter
The OLFA LA-X
OLFA 1072198 LA-X 18mm Fiberglass Rubber Grip Heavy-Duty Utility Knife
This is a good knife, but maybe not for box cutting. I've never liked snap off blades. I've always been concerned they might snap off at a bad time or fly through the air when snapping off. That said, it's fast to get a new cutting edge. VERY sharp, and requires special OLFA blades: OLFA UltraSharp Black Snap-Off Heavy-Duty Blade. I'll use it for fine work, but I do not recommend it for cutting down boxes.
The Stanley Thumb Wheel Knives
The picture above shows the various style of Stanley thumb wheel knives in the open position.
Thumb dial knives have the advantage that when the dial is tight it holds the blade firmly and the blade doesn't wiggle much. But when the dial is tight, it is tough move the thumb switch that extends and retracts the blade. (It is possible to move the blade with the thumb screw tightened down, but I do not think it is intended that you use the knife that way.) So these are slow knives to use: loosen the thumb wheel, extend the blade, tighten the thumb wheel. Then when you are done, you have to loosen the thumb wheel, retract the blade, and tighten the wheel again. Really, this is best when you need a tightly held blade and don't need to retract or extend the blade.
The Stanley FatMax 10-777
Stanley 10-777 FatMax Locking Retractable Utility Knife
I do not think this knife is a good occasional box cutter because the thumb wheel prevents extending and retracting the blade. Thumb dial knives have the advantages and disadvantage described in italics above. It also seems expensive (approximately $15 at this moment) for it's construction. On the plus side, it feels very good in my hand!
To switch blades, you have to loosen the thumb wheel all of the way and then you can pry open the handle at the yellow triangle and swing the handle open. It works, but it is awkward. It uses standard utility knife blades.
The Stanley FatMax Extreme 10-815
To switch blades, it you open the thumb wheel all the way and there is a spring that automagically rotates the handle open! (You do not have to pry it like the 10-777). Very nice. The blades are held in place with a spring clip so you don't have them rattling around and getting dull. It uses standard utility knife blades.
The construction on the knife if great. All metal construction. Nice castings. Brass thumb wheel. It is really solid, and it's big too, much bigger than the 10-777. If I was cutting roofing or something heavy and making lots of cuts between retractions, this would be my knife. Look for it on eBay from sellers outside the USA.
If I need a heavy duty knife, this is the one I'll grab.
The Stanley Titan RB 2-10-122
Stanley 1-10-550 Knife"Titan" with fixed blade, Silver (this version comes with a holster, which I didn't have to test.)
Almost fish-like in shape! It is up to you if this shape appeals to your hand. I thought it was a bit slippery. Heavy duty, all metal construction, brass thumb wheel. Once again: Thumb dial knives have the advantages and disadvantage described in italics above.
To switch blades you loosen the thumb wheel all the way and flip the handle open on the hinge. Easy enough! Unfortunately the blades are loose inside the handle and rattle, perhaps dulling them.
I just didn't like how this knife felt in my hand.
Note they sell versions of this knife that requires a screwdriver to open (without the brass knob), be careful what you order.
Folding Utility Knives
These have a big following and lots of people love them.
But personally, I'm not a fan. I carry a folding pocket knife all the time in my pocket, and I'm OK with the operation of opening and closing it. I'm always careful. But for casual use I don't think these are a great idea for someone who doesn't use a knife like this every day.
The Sheffield 12113
Sheffield 12113 One-Hand Opening Lock-Back Utility Knife, Blue
I selected the Sheffield 12113 because it got great reviews and had a mechanism that securely held the blade in place. (I've seen complaints about knives like this with button release blades opening accidentally.) But I found I really disliked this knife: One, the flip open mechanism is just hard someone not familiar with this kind of knife to close safely. Two, see the metal tab that says "OPEN":
So, I really do not recommend this knife for casual users. Leave these to the professionals.
Summary - My Choices
For the box cutter that we will keep in the kitchen drawer:
For detailed precision work in the shop:
For heavy duty work:
The Stanley FatMax Xtreme 10-815 Try eBay here.
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