I Never Knew This About Snap Knives
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- Опубликовано: 14 май 2024
- The humble snap knife is incredibly useful, and even has some pretty cool hidden features that you might not know about!
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00:00 - Intro
01:37 - Blade Replacement and Safety Lock Mechanism
02:30 - Built-In Blade Snapping Tools
02:57 - Storing Extra Blades
03:50 - Notch Feature and Wire Stripping
05:24 - Blade Disposal Solutions
07:02 - The Invention of Snap Knives
08:21 - Using Snap Knives for Various Tasks
09:37 - Conclusion 
Хобби
Quick tip: if you don't have a secure way to dispose of the knife break-off, I usually get a piece of tape or something like that to tape around the broken piece when I throw it away. Wrapping a small piece in electrical tape or anything like that will reduce the risk of accidentally cutting something/someone later on.
Thats what I do too, usually with a piece of masking tape
Excellent safety tip, especially if kids are around.
Even a piece of paper works well, just fold it around a few times. I also don't like the idea of an exposed sharp blade kicking around in my garbage bag.
0.0．０
I usually drop them in an empty bottle before throwing them away. I use tape otherwise.
One of the most useful techniques I picked up along the way was to hold the knife like a pencil.
I teach this to all of my students as it dramatically reduces the chance of slips and slides.
When you hold it like that you can't apply too much pressure, so when the blade slips, there won't be too much force behind it as opposed to holding it like in the video. You can also get a cleaner cut by not applying too much pressure, just gently slide the blade a few times and the cut will come out nice and squared.
Of course it doesn't work with every application, but for art and architecture, this one little tips has saved so many fingers.
if you hold it like a pencil wouldnt more of your hand be in the direction of the sharp part of the knife? while holding it only at like the top is safer cause if you slip you just drop the knife and not cut yourself?
NT Cutter is a Japanese brand that is excellent. It's party trick is that when you get to the end of the blade, just push it all the way out, and when you slide the thumb pusher all the way back it will automatically catch the next blade!
NT Cutter from Japan is actually the company that invented this kind of knives and introduced it to the market in 1959. Great products indeed.
Wow!
I bought two NT Cutters because I saw Adam Savage using them. I love the weightiness of the handle.
@@failswithtails I'm pretty sure that's where I saw them as well!
I’ve heard these were invented/ inspired by Japanese cobblers after WW2. Resources were real tight so pieces of glass were used to cut leather and when the glass got dull, they would snap off a portion of the shard to get a fresh sharp edge.
The origin story shared by OLFA talks about something similar. They don't share the exact details but you're exactly right - it came from re-breaking glass to keep a sharp edge, and the concept of segmented chocolate bars.
So *that's* why this kind of knife is called a "Japanese knife" in the country I've moved to! Thank you for clearing up a question for me.
Used these for decades as a structural aircraft tech and always had the ALWAYS useful, small(9mm) version in my belt holster(along with a 6" scale, scribe, pen and 0.4mm permanent marker). The company supplied both sizes of cutters and an unending supply of blades. Also indispensable in the composite repair shops, where that fresh, sharp 25mm blade came in extremely handy when cutting multiple fibreglass or carbon fibre prepreg layup pieces on the self-healing mats in the cleanroom.
Since retired, a 25mm blade lasts FOREVER, mostly opening various Amazon packages, lol.
As a youth, I worked in warehouses and loved the disposable snap knives. Problems from dirty cardboard, gunky adhesives, and staples would be snapped away. The ones I had could be locked in the fully retracted position. All while being cheap enough to give away. It was part of my EDC for years too. On the occasion of going to security, no need to return the nicer knife to the car or hope it gets past. Just slip into a trashcan.
I have no idea why RUclips placed that in my recommendation list; but your video taught me a lot about snap knives. Thanks for the course.
Same here, I didn't know about the removable blade snapper on the end of those disposable snap knives. Very handy!
I still have an all-metal snap-knife made by Olfa, the original snap-blade manufacturer, that I've been using since the early 70s. My initial use of those devices was not exactly safe, as not knowing any better I'd often stroke the blade toward me instead of away from me. On one of those occasions I managed to cut a slice through my thigh, leaving a large pool of blood on the floor in a matter of seconds. My mom rushed me to the ER, as I kept pressure on the wound. Lessons learned were to never cut toward myself while using force, and never expose more blade segments than necessary for the job.
Since then I've had utmost respect for those (as well as all other cutting) tools, with zero accidents since, over the last 5 decades. An I still have, and use regularly, that very same Olfa cutter.
My lesson was a Buck knife into the thigh cutting hotdog sticks, fixed the almost 2" slice with duct tape though, have a nice scar to remind me.😂
@@bobjones8372 Ouch. 🙂
I'm not even joking when I say I strop my snap and box cutters. I know they are cheap. But there is just something about not needing to replace them daily. I pack hundreds of boxes every week.
I run my utility knife blade through a pull through sharpener until it's a hook shaped nub before I'll flip it to the good side :)
Same, just feels wasteful to snap them off, I use a honing rod before each shift at work and they last until I lose them
Kinda do the same. Use a Ikea knifesharpener every or every other day to keep it razor sharp. Keeps the effort down when you cut box after box
I use the olfa HD and the blades are stupid expensive but rarely break, so I tune mine up with a little diamond pocket hone. You can also break the yellow plastic off of the HD model and it's very sleek.
i think you ARE joking
Ive got a smaller Fiskar one and when you run out of blade segments you push it all the way out and it loads a new blade stored behind it. It also came with like 7-8 blades ready to replace when needed and it was like 8.99. Definitely a good buy
I absolutly love the roofers 'work boots' with the huge hole and wearing no socks! 😂
I thought that was hilarious too. Our editor put that clip in and I didn't catch the hole in the shoe the first time.
Was gonna say the same thing!
It’s an ergonomic feature so your feet can breathe better 😅
Nice safetyboots
@@cermisan "safety" ... "boots"... lol.
Thanks for the vid, informative for sure. I’m a bit over protective so I appreciated mentioning that big scar. As just a homeowner and crafter that often uses these I want to mention two things for safety. 1. Never leave the blade exposed when not using them. Very easy to close it and reopen. 2. Without having a storage unit I will wrap an inch of tape over the broken off blade and it’s good for the garbage. Overkill? Maybe but I’m old and afraid of the big bad world.
An empty beer can works well for projects that generate a lot of blade snaps(put a bend in the can and turf it into the recycling bin or garbage when done), but like you, I'm overly concerned about that tiny sharpish edge cutting through the garbage bag and then severing a limb or my head in a freak accident, lol, so out comes the tape.
The bin men /garbage collectors will appreciate that.
Ounce of prevention pays out big the one time you need it too.
I came here knowing there was nothing for me to learn about snap-knives. Now I know a lot more about snap knives.
I came here hoping to learn something new about snap-off blades (!) and knives. Now I know watching this channel is pure waste of time...
@@MrKotBonifacy So you did learn something! lol
But yeah, I know what you mean. Nothing that isn't common sense here. And the title of the video - what did he not know about snap blades? Cause this is all first day stuff
@@TheDarkSkorpion Precisamente, amigo.
I use the original (Olfa) every day, a tad more expensive but honestly couldn't go without.
Cuts and strips wires, cuts ropes, strip plastic/cardboard packaging etc, have even sliced up sandwiches at lunchtime, clean excess glue, sharpen pencils etc etc.
Has a blunt plate at the rear that works for opening paint cans/unscrew flathead screws/bolts/general undo things that the sharp end doesnt do.
And it's high quality, neigh on indestructible.
You can get by a whole day never noticing you have one, but you'll instantly recognize when you forgot to bring one.
Focus... out of focus... focus.... out of focus.... focus.... out of focus.... focus... out of focus... focus... out of focus... focus... out of focus... focus... out of focus... focus... out of focus... focus... out of focus... focus... out of focus
You must be fun at parties.
At least until after the first few drinks - then everything's out of focus...like this video
Sounds like it's time for glasses.😁
@@glitch9211 Sounds like it's time for this channel that has 1mln subs to learn how his camera works.
ADHD camera.
They're your eyes, do what you like. But I always have Rx glasses on and always "break away" from myself so if there are any steel bits flying they aren't going towards my eyes.
Great point - I should have shown broken the blade the other direction.
Yep! I mentioned this too! I've had a close call with flying blade shrapnel!
If I have no safety glasses than I usually put the knife low and close my eyes/turn my head away for the moment of snapping. It's scary to imagine one of those shards landing in my eye.
If it doesn't say OLFA, don't bother.
100% agree. I don't do carpentry or any form of building, I work in the print trade. It's OLFA all the way. Quality.
Can you explain why? I dont care much about brands. I prefer to stand by how it was made. The heat treat, the edge retention from the protocols they used. The quality of the handles etc.
Can you quantify it?
+1 olfas are the best value. Their full stainless steel model and the models that come with the black coated blades are my favorite. They sell a cheap plastic case you can snap pieces off with and they get automatically collected in the plastic case. When it's full you throw it away
@@tacticalcenter8658made in Japan. Quality & robust designs. Fully stainless one available is great for industrial applications with solvents/oil.
The speed & smoothess of their mechanism that moves the blade is just totally dialed in & is perfect amount of force. Never comes out in your pocket, but effortless to use.
@@tacticalcenter8658 OLFA knives and blades are made in Japan, and made damn well. I've got a couple that I've used for 3 or 4 years, total metal body, all the paint has been worn off and they're pretty much worn to a polished metal finish. Their replacement blades also come with a little container for the broken off sections which is really nice.
Knipex makes a really nice version of this with an extendable spine to stabilize the blade when you extend it out. Also an easy tool free way to snap off blades is to put the blade down on a hard surface at an angle, place your thumb over it and push down, so the blade doesn’t go flying.
that's how I snap mine.
This is The Way, lol.
AVE just released a very high quality snap blade utility knife that is very nice, it’s not cheap but nothing high quality is generally
Who knew a video on a snap knife could be so interesting. I learned some new things about them.
I used one regularly years ago. There is a Japanese brand that sells heat-treated blades. I was cutting 8 foot gator board all day at the time. Made a big difference.
Excellent info!!! People who designed these utility knives should be in Congress, rather than crooks being in Congress now! Believe me that small, but yet smart, thinking like this is what really needed in this country!
Sounds good until you end up with patent trolls in a position of power.
The inventors of these things deserve better than being in congress
Most people don't realize that there's blades in the handle.
All Fiskers products are great. I didn’t know they offered a pro snap blade. Very cool
Their kitchen knives are not great. The handle of most of mine are melted or deformed and disgusting. It is made of some inappropriate plastic. Even fingerprints from hot or greasy fingers are impressed permanently in the plastic.
I have their snap blade knife. It's disappointing. The slide gets stuck frequently and I need two hands to move it. It also doesn't lock the blade securely and it will often pull right out of the handle when I'm cutting something particularly tough. Wouldn't buy another one.
Their machetes are junk.
@@curt2742 At least the newer ones. There was an old version with much besser steel quality.
Good info, I think I threw away one that probably had a spare blade still inside. I got into building R/C airplanes with Styrofoam few years ago and learned that, at lest for hobby use, you can tune up the razors edge with a standard kitchen knife steel rod to get some more life out of the blade.
YOu can also buy replacement blades
My first rotary knife was an OLFA. Excellent tools. I buy one of two of these at HF and keep them on all my work surfaces and in all tool bags.
I even found these snap segments are a great replacement cutter in my wife’s embroidery machine. After so much thread the OEM blade gets dull. I opened it up to find one of these segments placed in a holding slot oriented to cut the thread when activated.
Dude. I did the EXACT same thing with a box cutter as a kid! I thought I was the only one!
Yours looked a little less severe than mine though. I actually sliced clean through the tendon on the back of my thumb.
Also, I never realized that OLFA was the originator of snap blades! No wonder I've found those to be the most reliable!
I have almost the exact same scar from the video, also from cutting cardboard when i was young. I guess an accident like that in your youth is the perfect opportunity to learn.
You can also cut a slit in between the studs and drop your used blade into the wall. What I found when we renovated our bathroom…hundreds of razor blades in the wall. 1955 medicine cabinets were the best.
Hah. Brings to mind a funny story. I was once remodeling an old house. We removed the medicine cabinet and demo’d the plaster. In the wall cavity we found a whole bunch of coins. Apparently the owner was using it as a bank, saving for retirement.
Tetanus farm.
Perfect for a kitchen installer, you can cut silicone and glue between countertops, frames and wall tiles and open the boxes for appliances etc
I always have in my pocket a HD mechanical pencil, a snap knife and a tape measure, those get you so far
Honestly, my favorite is those $1.00 "box cutters." 📦 🔪 They are small cheap, and the form factor is perfect for your pocket or wallet.
I have a heavy-duty uline snap blade knife and it has an auto-loading feature. Really handy. Also, if you find yourself using a snap blade fully extended all the time, olfa makes solid non-scored blades that fit 9mm and 18mm handles.
Another great post! Thanks for all your work.
Thanks so much! I appreciate you watching.
I have several snap blades and my favorite is the OLFA SVR art/graphic knife. Small (9 mm) with a stainless steel body. Unlike the polymer bodied knives this one doesn't dissolve and get gummy when exposed to solvents.
5:49 tapping that metal with the fresh blade edge, that was painful to watch
I have the same fastback. I upgraded after keeping an aluminum body basic fastback for the last number of years. I still have it but I really like the 1505 because of the bit driver. I’m a handyman and it is forever in use at my day job.
Knipex CutiX, it has the best feature imo which is stabilization bar - it makes cutting with long exposed blade more durable and stable, plus you can more comfortably use your thumb on the back. Also the magnesium housing is more durable.
The notches are very useful for the manufacturing process. They act as a collider while the machine pushes forward the raw material under the stamp to make even parts.
Good run-down 👍 i also like Olfa a lot but I recently got the Knipex Cutix and I'm lovin it
Howdy, last week I educated myself on these and found they are pretty cool tools, I had no idea the snap blades were that old, a year older than me. I sharpen mine as they need it.
I have the Fiskars Pro utility folding knife, it's similar to your Milwaukee Fastback in functionality but probably doesn't have some of the features. I have another folding utility knife under Canadian Tire's Mastercraft brand that has the ability to store five extra blades in a small covered compartment inside the handle. It's pretty rough around the edges as it's years and years old but it still works for the most part.
You could also talk about all the different ways to use a k-bar. It's my favorite work knife.
NHK has a show were they look at Japanese inventions. One of them was on the creation of the snap bleeds. Very interesting the inventor talks about the discovery and improving it. Definitely worth watching if you can find it I have it recorded somewhere in my archives that I have to go through.
i really like the olfa with self-locking ratchet they work really well, and they make black blades that are extra shop excellent for cutting foam rubber smoothly.
You can also get Olfa snap-off hook blades to use in these with 4 segments...best thing ever for cutting shingles! I reccomend a good dial lock handle though, so the blade can't pull eightout when used...
I had no idea there was a blade snapper feature built in! I checked and sure enough, mine had it too. Thank you.
Cant belive you didnt feature the OG - Olfa cutter
Olfa Silver rules them all
my go to brand is tajima, especially their blade refills. but that fiskar pro looks pretty sick
In Austria, this is almost the only way knives with interchangeable blades are known. But here they are usually called Stanley knives because they were the largest suppliers and probably the first on the market. If you want to express it without a brand, then these are called carpet knives. Many use a comparable mid-priced version. But most people use the cheap version because in a large pack they usually cost less than replacement blades.
The nickname for these in our house is "the blood letter".
Olfa and nt cutter are the best, both japanese. Also 3 degree 9mm knifes are the way to go for detail work. The narrow tip is so handy
You missed insulating. That was where I was introduced to these type of knives. The long blade is great for it
I have a Knipex knife. It has a stabilizer that retracts with the blade so you can have the full lenth out and use it without it bending and potentially breaking. it´s great!
there are serrated blades available on amazon. i find they work way better for doing stuff like cutting through hoses or ropes. they come 10 in a pack and are sharper
I have the "Knipex CutiX 90 10 165 BK" Carpet Knife. It has everything. Very safe "blade Lever" that locks itself and is always ready to retract or push out the Blade, a Blade compartment, really nice grip on the Hands, quite light despite it being on the "medium" size and the best feature, It has a really sturdy kind of Rail thing for the blade so you can extend the blade all the way and the rail holds the blade safely so you can use the whole lenght of the blade without having to worry that it might snap. Really awesome Knife and i have it everywhere i go with me.
Interesting, information i didn't know. Helpful.
Glad it was helpful!
Where to buy the OLFA Blade Disposal Case? Even on the olfa website there was no such handy Case withe steel inlays?
Great video! I thought for a bit you were going to give some tips on how to reuse/recycle/dispose the little snapped parts, but great insights nevertheless.
Any suggestions on the best way to dispose of used blades?
Not just these but X-acto blades, etc. as well.)
put them in a clearly marked sharps container and then u can take them to metal recycle center, but they may not take it cause those containers are also used for used needles. if u have weekly city recycle service just put the container in the there.
7:36 Nice safety shoes 😂
I got small steel one at work i use all the time. Great thing about them is that you don't need to be carefull about what you're cutting. Not from safety point, but from blade point. Does't matter if you cut cardboard and drag blade over the concrete because you just snap tip and it's fresh and sharp, plus it's cheap. I got can i drop blade sections into, and when it's 2/3 full, i hammer it closed and drop into scrap steel to make sure it won't cut. Only downside is that blade is flimsy if extended far out, so you need to be more gentle.
There are also the much larger variations, almost the size of katanas. It’s said that those were used to slice the nape of a giant’s neck which then causes them to evaporate. Be careful with the steam, it’s a little toasty! What’s great is that replacement blades are always available on your hip, which is really handy. For maximum efficiency, always pair it with a multidirectional transportation hip unit. Much easier for much upward diagonal manoeuvring.
I need to go look at mine. It was a gift and I rarely used it as the blade would only break when I didn't want it to!
We need a full tang version ! Lol
Word to the wise, safety glasses when snapping off the blades is a good idea. My Olfa with official Olfa blades almost got me the other day when the piece snapping off shattered as soon as it detached and sent sharp bits flying at my face. I went and bought some safety glasses to wear where I snap the blade now.
Do you know any company that produces a left-handed version of a snap-off knife? This is one tool that really needs it.
2:48 It's safer to snap outwards to avoid the blade projecting towards you. Some breakers have wider or shallower slots that can't hold the blade properly.
I use these break off blades exclusivly at work, and while I dont recommend it, I break them off with my thumb or press them on the ground. Also I like that it is way more flexible if you have to cut in a corner
as a signwritter who does a lot of stickers, I generally do the same thing, and I have a small plastic sharps container in my belt all the time
my city differentiated garbage disposal rules are that plastic and metals go together, so i usually 3D-print a little sealed box with just a slit for the blade to go in and when it's full i throw the whole box in the bin. this is encouraged by the city's law as well, to protect the garbage men so they have less risk to cut themselves when collecting trashbags.
I really like my stanley snap knife with the automatic blade magazine, you just pull the blade from the front and you have a fresh blade
Cutters are more common in Indonesia; in fact, having a pocket knife here is considered highly unusual, along with the downside of having it seized when passing thru a metal detector (which all malls, hotels, and most office towers have by default). Cutters are ok considering you don’t normally carry one around either.
I'm surprised you haven't covered one snap knife in particular which is automatic. Meaning, it has a storage just like the yellow one you've shown, but it's been so cleverly designed that after snapping off all the portions, once you reach the end of the blade, you retract the black scroller (or whatever you wanna call it) and it literally slides in safely a new fresh blade from the storage. I have that one and it's awesome, but it's a Chinese brandless snap knife so I've no names to give.
I guess what I've described isn't around as much as I thought.
I checked it... and I just found out that my cutters which I use for years have a blade storage.. thank you
Had an accident similar to yours while being a kid. Been paying close attention to safety dealing with sharp objects ever since
You really got me with your pliers trick I was like there’s no way this guys making video abt these knives n telling us to use pliers 😅😆
Great video. I now want the Fiskars, even though I'm not in need of such a knife :)
Re: wire stripping, don't do it like that. Any professional electrician will say the same. That puts cuts in the conductor which weakens it, more than you might think. Then as it's bent (e.g. around a screw or inside a wire nut) it's more likely to break at that point. Especially if it's bent back and forth a few times. Novices should use a stripping notch in a pair of pliers.
1:44 This is funny, because all those knives - even the disposable ones - have a plastic back with a slot in it that is intended to be used to snap off the blunt section of the blade. That was a standard feature back in the 70s.
0:18 🤦♂️😂
Wow. They should include an operators manual pamphlet with some of these things lol
Fyi, regarding wire stripping, if your blade touches the copper as you spin round, you have just made a fantastic stress riser, and that wire is now mega compromised if it gets wiggled or vibrated. Try stripping two wires, one where you let the blade nick the copper, then one which you didn't, then wiggle the copper back and forth. The nicked wire will snap at the nick in let's say ten wiggles while the one stripped carefully Wil last 50 or more.
Very informative! I'd suggest using a fixed focus, though. Your autofocus left a lot of shots frustratingly blurry. Also, it looks like you're pretty good at editing, so if you need a more zoomed in shot on something thats not in the fixed focus range, you can just zoom in in post, or of course alter the gocus manually in real time. Personally, I've never minded a creator taking a moment to adjust their focus, which can always be cut out, too; but when you're trying to show me something that's blurry, it gives me a bit of a 😕🙄😮💨 feeling.
That notch can be used for etching acrylic sheet as well
I myself was not careful with one of these and made a huge cut between my thumb and my index finger. Didnt hurt at all...still have the scar from the stitches as a reminder.
I'm curious whether there are places that recycle the broken bits.
I am using snap blades since I was in high school in the eighties. And I never understood why the notch only was in the first blade. Now I know it is an indicator, not a tool to remove the plastic from wire, and that people only use it for that. Now I understand why it isn't in all pieces 🙂
The boxy OLFA one is my favorite.
You can also get versions of these knives where you can load multiple blades and there's a latch to remove a used blade and the sliding lock part automatically picks up a new blade when fully retracted.
What I like about my main utility knife is that when you slide the button all the way forward, the blade comes lose, and when you slide it all the way backwards, a new blade is automatically fitted. You can basically reload it without opening up the 'magazine', which holds up to 5 blades. It's really handy.
I'm just using these in ways that aren't recommended. I'll remove all locking mechanisms so I can get the whole blade out with the flick of the wrist to get at the plastic wrapping around the pallets at work. I don't generally use the snapping action but rather hone the blade before each shift with a honing rod. I also like snapping the first portion of the blade at a flat angle for a squarer blade.
Is there a link for the fiscar knife?
Sure thing. The link is in the description and here it is too: geni.us/9t1TUo
I use the notch on the blade to score acrylics/plexiglass in a pinch if I don't have a scoring tool.
Might go to for removing old caulk on tubs and such.
First that’s a Man scar my friend so that is nothing to feel bad about. Second I found the Milwaukee one better for cutting thick PVC. The snapons woud either bend making the cut bad or would slowly slide back in. Anyways I use both😊. Cheers.
The dewalt version of the snap knife is awesome. Doesn't have any useless "features".
Great video 😊
The best feature of these blades is that they can snap when you don't want them to. I once cut in the tip of my thumb quite deep when the blade snapped. Luckily my nail got the most of the impact, otherwise it would've been a lot worse
I first started using these in 1972 for layout and design. The first brand I ever used was made by DICO, like the small blue one in the video. There have been scores of manufacturers since then. New? Where have you been?
The snap off razor is the perfect box cutter.
There are also different blade types avaliable. From TiN coated to serrated, non-scored, 30° angle scoring for a pointier tip, breakaway hook blades with 4 hooks and I'm sure these are just a few...
The black olfa blades are the best. Very sharp.
you should have included ceramic hobby knife like Slice Ceramic Micro-Blade, best for safety and flush cuts. and thank for all the information from all your videos 🙏
LOL we all got scars on our hands from these knifes from when we were young, mine is from cutting a big styrofoam airplane, the knife is what flew not the airplane, then the blood 😅🤦♂
Thank you for that electric wire cutting tip 👍 and now I'm really curious to know if mine got blades storage too 😲
You missed out on the coolest feature, mine stores the extra blades behind the main blade and are spring loaded, so when your main blade runs out you just extend it all the way causing it to fall out, then the next blade springs into place and when you retract the button it locks in place and you have a new blade :D
My favorite version is the sword sized ones for when you're Attacked (by) Titans. LOL