Technology of Hammers & My New Wooden Sledge
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- Опубликовано: 25 сен 2017
- How does a hammer work? What is a wooden hammer used for? Find out here!
Hammers are one of the most versatile and important tools, regardless of trade or industry. There comes a time in every job where you need some controlled FORCE, and a hammer makes that happen. I have used a hammer 6 days a week for my entire adult life - and I appreciate the wonderful utility of this simple tool.
Watch Travis make this hammer here:
• Blacksmith's Wooden Sl...
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Thank you, be safe, and be grateful.
Y'know, I can't think of a single video of yours which I haven't enjoyed. Thank you for your time and effort in sharing your knowledge with all of us.
I'd like to second that, thank you
Agreed
Here here
Hes got Jesus for sure
I’ve been pondering on the idea of the type of person who puts a dislike on his video’s I could see Disagreeing with him or something he did but the whole video?
You can save the striking surfaces of that hammer by adhering a nice piece of 12oz veg tanned leather to it... will greatly extend the life of the hammer head.
My Grandfather’s neighbor was an old worker who at 95 years old looked 55. I will never forget when we were taking out the sidewalk of my Uncles Mother, who lived across the street from my Grandfather’s house, we weren’t making much headway as the blockers were 8” to 14” thick. I was in my teens and quite fit swinging a sledge along with family between 30-55 all working hard and not doing much. Alfred came over at 95 came over with a wooded mallet and he took 3-5 swings and broke a block. We tried and couldn’t do much with the mallet that was probably 50-60 pounds. Amazing to me to this day the difference in generations. Alfred worked for our local trolly company for 60 years earning a plaque on the now converted rubber wheeled historic trollies. There just aren’t too many people like this today. Watching you reminds me just a little of him and for that I’m great full.
The "leverage" on a hammer handle works in reverse to the "conventional" way most people think when they hear the word. A longer handle allows you to bring the head to a higher speed (the radius and thus the circumference of the idealized circle, on which the head travels, gets larger). With kinetic energy being proportional to the square of the speed, this allows much higher kinetic energies at the same speed of hand movement.
is that similar to how a wheel moves faster at the outside than the inside? is a wheel just a spinning 360 degrees lever?
Yes.
The lever does two things. One is to create a more ergonomic way to strike the workpiece, which you generally want to do flat. Hold a hammer head in your hand and see how awkward it is. Workbenches would have be chest height, bringing the impact close to your face rather than closer to your waist. That itself is enough advantage that it would be a tool on its own. The other is that the lever slows the swinging of your arm down but adds more weight for the same speed. That's counterintuitive, but here's why. When you swing the hammer, you can only put so much energy per second into it. By increasing the time spend swinging, you have more time to put more energy into the hammer. If that still doesn't make sense, consider how slowly one moves a sledgehammer, you spend 1-2 seconds in a full swing for a tremendous impact, versus the 1/4-1/2 second you spend swinging a smaller, shorter, lighter carpenter's hammer.
This is also the principle behind the sling (i.e., the weapon).
Not being a smarty pants - just think this is a fun conversation... Leverage here is probably more of a metaphorical application of the word. The accelerating of the hammer head at an increasing velocity results in an increased total mass or relativistic mass; how the acceleration is achieved isn't considered with solving for inertia - and that now has successfully exceeded my qualifications LOL
"Constrained Radial Energy"
You are absolutely correct in saying that a wood hammer ( mallet ) is indispensable in the shop !
I've got two that I made twenty five years ago, one is of eucalyptus and the other one is desert ironwood. Both of these have had many thousands of hits and still holding up well !
Thanks for sharing and take care. 👍
Man!
Your Video's are like Free school!
Thanks so much for keeping them awesome!
Also fun
His videos are free entertaining nostalgic education
After a long day of not doing blacksmithing, I find this SOO relaxing to watch/hear.
Great stuff Scott! I will definitely be checking out Travis' channel!!😊👊
You, sir, are what's called a Natural. You're a great presenter, and you fit perfectly into this genre. When the DIY Channel comes calling, as they probably already have, I hope that you'll say no. A lot of people like your short videos the way they are, and I'm one of them.
Gordon E Taylor so true
Say yes because its more business.
DIY channels and shows need to just go away.......
Man, this is the best description of a hammer I think I've ever heard!
You are a joy to listen to, and I look forward to your new videos every time.
Thank you for another concise and informative video. You're doing great work!
It’s crazy how much you can learn about stuff you thought you knew. Like the different faces of a hammer exert the energy in different ways. Like I already know different hammers do different things but I have never thought about it in the depths this video has me thinking. It’s amazing, thank you for sharing. Love this channel.
Loving the amount of knowledge shared on this channel.
Thank you Scott and Nate!! Interesting content!!! Loved it !! Be safe and God bless you and your family !!!!!
I'm so glad I found your channel and enjoy all the wisdom you share!
oh that's very cool. I definitely am gonna make one like that pretty soon here. thank you for sharing sir.
Love the channel. Another great episode, with good, interesting content. Thank you.
So awesome you are promoting other channels! Way to spread the love.
I made my first wooden hammer working on an outdoor project. I had broken a handle on some post hole diggers so I drove the round end through a scrap of pt 6x6, chamfered the faces, and shaped a comfortable grip in the square section with my block plane. I was really kind of playing on the job, but in 20 minutes a made a tool I still use to make adjustments on outdoor projects without leaving elephant tracks
Scott you are a wealth of information! I hope to one day know a 1/4 of the the things you have forgotten. Another great and informative video! Cheers from Florida .
I just want to say EC u are a true craftsmen and inspiration. I'm a Cincinnati Local 2 Union Carpenter and watching you makes me strive to be a better carpenter and jobsite leader daily
Ha! Travis in a gif was awesome :) Nice hammer too, I'll check out his video to see about making one of those.
Scott, you are doing SUCH a great service with these, sharp, well edited, flowing and topical presentations of simple technologies that built the modern world, through blacksmithing etc. Thank you for your "service to the nation" ;-) MACHINECO
That is a great video. Humourous and informative. Bravo!.
I friggin love this channel. Thank you.
As a blacksmith, there is nothing like the feeling of accomplishment after having made something that is functional and beautiful. When I made my first hammer (4 lb rounding and flat) I was much more aware of the difference between mass produced and hand made. I'd never go back if given the choice. Keep forging!
His videos are always interesting and very useful, thank you good work 👌👍👍👍
Now that is amazing! I want to make one of those now!!
Awesome presentation as always!
Great video. The strength the handle adds to the equation is tangential speed.
Another great tip! Wooden hammer/mallet for use in blacksmithing. Thanks
Every time i learn something new in your videos
I think I actually started watching Travis' channel before I found yours. Little did I know there was a connection between you two. What a nice surprise! You are both very talented.
Thank you for encouraging the next generation of workers.
I know nothin about woodworking or blacksmithing but I find the channel fascinating
Just found your channel and I'm instantly hooked. Subbed. Man it'd be a pleasure to work in that shop and learn.
Thanks for the video.
My grandad useto have a wooden mallet for his copper smithing trade when he made brewing tanks for beers and ale so they have a wide use
You are a great teacher
good to know. thanks
Make a video on layout and hieroglyphics details for plate detailing. Thanks Scott and Nate
Hello scott , great video ,learning good stuff
Question = do you have a good pair of suspenders review for working man for holding tools ans pants
Thanks in advance Serge ( from Mtl )
Annother great video, Thanks jim
I believe levers are group by class depending on where the fulcrum is placed. In the case of a hammer, it's a class three because the fulcrum is at the end where the gain is speed. The opposite end a class one, an example is a wheelbarrow.
I see my favorite hossfeld bender in the background there
Very good videos.
ah great idea of the weights in wooden mallet...i might drill some holes and fill them up and plug them so they have more towards the front then the rear part.
I have an old 16 pound sledge head I use as an anvil to stamp keys after cutting them, works like a top
I could listen to Scott talk about hammers for hours on end and not get bored. Come to think of it, I actually may have
Great vid. My 3 year old and I will be putting a new handle on an old Channellock brand ball peen hammer head soon. He will know that tools are the best assets to a man who works with his hands.
Even if he grows up to work at a desk I want to make sure he knows how to work hard even if it’s just for his own hobby.
Even though I’m 28, work hard as a mechanic, have tons of knowledge, get filthy and have very rough hands, I still enjoy your videos and learn something from most of them but I take away a lot from every single one.
Cool hammer idea!
I enjoy your vids :)
not a lever but you increase the arc or radius of the blow to increase speed.
Love you vids Sir.
How about a tutorial on how to use a hammer? Like drive a 16d nail in two blows?
Nail set, strike hard.
Great channel, really enjoy learning new things about the trade.One question though does anyone know the name of the song at the end of video?
Good stuff Scott.
Link to Travis's video for those that had trouble finding it (like me): ruclips.net/video/gzccDLKRSOw/видео.html
Very topical; Man at Arms RUclips channel just made a massive forge welded axe and made the welds using some big wooden timber framing mallets. It's something I plan on trying to avoid excessive thinning during forge welding.
Hey Scott. To your point on why adding a handle to a hammer increases the force I think it's because it increases the velocity and the formula for kinetic energy is 1/2 mass * velocity^2 so if you increase the mass by a little bit you increase the kinetic energy by a whole lot!
I had a wonderful physics teacher in high school that was forever writing wacky word problems for class tests - she’d have had a blast with this comment thread. One comes to mind to the effect “You are swinging your sister Susie’s cat by the tale in circles above your head. When she opens the door you are startled and the cat’s tail slips from your fingers. At the point of release the 6 lb cat was spinning at 1 revolution per second . . . “ you get the picture. Loved that class.
They need to show this series in Shop, Ag, and Home Ec classes and 4H, FFA, etc. extra-curricular after school programs.
The GIF with dogs.....what a perfect choise if there ever eas one...made me laugh...
I would think that in the swinging of a hammer, you would be making energy rather than storing it. like filling a container with water and then allowing it to flow causing work to be done. your vids are always great to see!
This guy is the Professor from Gilligan's Island and I say that with the upmost respect for this man.
Nice weighted wooden hammer, I would modify it slightly such that it had replaceable striking surfaces.
Handle effect is somewhat similar to a lever. Really, it ads speed, though, more than leverage. And, control. Could be a long argument in Dynamics Class (ME101).
I made my own wooden mallet. It’s the size of a sledgehammer and I have yet to have a use for it. It’s not the prettiest but it’s only built from a 2 x 4 and a 4 x 4 and got it together securely without using any powers tools.
Many old wood mallets have lead in them to increase the force of the blow. Old school still works.
A wooden mallet is used by a carpenter/ cabinetmaker for two reasons: to prevent damage to the chisel handle, and also, the large striking surface of the mallet allows the user to concentrate attention on the cutting edge of the chisel rather than on the end of the chisel handle.
Robert Edmondson True, but the discussion of wooden hammers is informed by the cultural presuppositions that hammers be metal... Historically, a cabinetmaker or other workman used a wooden hammer because he could make it from available materials and replace it without real cost. Metal hammers developed to strike, drive, or form metal objects, and because they had good wear characteristics. Even the wooden hammer/mallet with an applied head mimicked to some extent the development of metal hammers, but many trades used fat-ended wooden 'clubs' that were formed often out of riven wood.
Example: Mike Dunbar's self-made striking tools for making Windsor chairs. The chisels struck with this 'club' (mallet) have brass rings on the handles to prevent the struck surface from splitting under repeated use, for longevity, but the mallet itself? A sacrificial tool that could be easily replaced. (Fwiw, I think Mike Dunbar was turning his mallets when I sat under his tutelage)
I am not quite sure of your "cultural presuppositions that hammers be metal", or your statement that historically a cabinetmaker used a wooden mallet because it could be replaced without real cost. For the reasons given, when doing chisel work, a wooden mallet is the more appropriate tool, regardless of its cost or the availability of metal hammers. Timber framers too, could use metal sledge hammers when assembling frames, but choose to use very large, long handled wooden mallets, not because they are disposable (they aren't), but to prevent damage to the wooden posts, beams, and braces.
Robert Edmondson there's truth in what you say. But from stone hammers to steel, to wood, hammers developed from what was discovered and available. In this process, certain methods of use and the preferred materials used proved that some applications were better served with wood.
The cultural presuppositions I refer to are demonstrated when one looks at younger folks who are surprised to have a crank handle instead of a button to lower and raise the windows in a car; not too long ago electric operated windows were a novelty, then a luxury. Now they are expected, assumed normal. A similar cultural norm is witnessed with younger automotive technicians who are mystified and baffled by carburetors in an automobile engine system. One tech expressed confusion because an old motorcycle didn't have a diagnostic port, expressing, "how do you figure out what's wrong with it if it isn't running right?" He went on to mention his tech school didn't cover antiques.
Humans tend to believe that what is familiar, what we've experienced, is 'normal.' If it isn't in a catalog or on the shelf at the hardware store and we haven't experienced the use of an item, a wood hammer for example, or one of the quite long-headed timber framing mallets you mention, we humans assume it's a 'flyer,' possibly quaint or archaic, or an esthetic. Today we humans too often assume if it's not 'manufactured' it isn't relevant or perhaps even practical, or possible. A recent post I saw where a fellow asked where he could buy the wood guides someone adapted to a handsaw for controlling depth of cut demonstrates this: the wooden guides were simply waste tablesaw offcuts through bolted to a handsaw with brass machine screws but the fellow posting assumed he needed to buy them somewhere. Or the city folk who think 'barrel' stoves are unsafe but plug their bedroom air conditioner in with a 16 gauge cord...
I just find it interesting to observe how people interact with items in their world and have been fascinated since childhood watching how people use things or form views of certain technological developments. People with cell phones, even proficient smart phone users are still fun to watch :)
Thankyou, Fishhuntadventure for your articulate reply. I don't mind longer posts at all if the person has something worthwhile to say, which you do. Your observations bring to mind a spoof I saw about "The Antique Road Show". All the "antiques" were electronic devices from the 80's and 90's, brought by eager owners hoping to cash-in, only to be informed that their gizmo, whatever it was, was "absolutely worthless". One young woman brought an early cell phone. She didn't know what it was. The appraiser told her that it was indeed a telephone, and pointed out that it did not have a built-in camera. The young woman looked at the object with incredulity. "Then how is it a phone?" she asked.
Robert Edmondson that's awesome! I need to find a clip of that!
Notification pops up.. kids daddy’s is gonna be busy for five minutes.. 😂 so much to learn from you Sir, plz keep them videos coming.
I allways thought that the first tool was my friend Krans, learning every day....
Percussive maintenance and percussive therapy are 2 very good uses of a hammer.
What are your thoughts on brass/bronze hammers?
Is a place I can get the dimensions for this mallet? Would love to build my own
Au contraire, when hammering hot steel with a soft hammer, like a leather/iron hammer, the part in contact with the Anvil is forged. I call it half forging. The materiel is worked almost to the center of the bar.
Just to add to the physics conversation (and to be admittedly a little pedantic) the cross peen doesn't increase the force per unit area, it simply reduces the area. So if the average force of a hammer blow is 100 lbs, (per google) and the flat face is about a square inch, you get 100 pounds of force. If the area of the cross peen is about 1/4", you'd get 400 pounds of force because PSI / area = force. 100/.25 = 400.
But that's just my inner nerd talking. great video!
Is it leverage or acceleration? I think the longer the handle means the more acceleration at the end of the hammer from the same movement at the point the hammer is held. So do we call that pole a lever? and is it leverage, acceleration?
Yes
Never rely on shaft length when hammering , it's the motion that counts, but keep the weight as low as possible to avoid bruising. :) ?
Learned to use wooden hammer to drive wooden stakes for tents in US Army back in the day 1970’s...
Wonderful looking mallet. I got the same hickory handle for an antique hand forged (ship/top possibly railroad) maul I'm custom restoring. Why? , other than I can't stand seeing misused and neglected tools sitting around waiting for more abuse if used at all. Again; great mallet there, and maple is one of my faves, just to pricey.
Great wooden hammer!! Next time put the wooden wedge the other way so you don’t split the grain or the glue/laminated pieces
what is the thing thats being made at the end?
I think the wedge in the wooden mallet should have been rotated 90 degrees. Epoxy will probably make that a moot point though.
Wonderful You tube site!!!
african olive tree ..the handle as well...best allround mallet for weight and durablity
Typically the wedges in wooden mallets should go perpendicular to the grain so that you dont split the head but the mallet he made im pretty sure will be just fine - the curly grain adds a ton of strength plus it being a laminated mallet are more than enough to keep it from splitting out.
My favorite mallets iv made have all been out of white oak crotch sections (crotch- as in the crotch of two large limbs of a tree- the grain there gets all bunched up and makes for very very strong wood, as anyone who has split large crotch sections for firewood will tell you), they just hold up like no bodies business.
My dad has his old framing hammer from around 20 years ago. The handle is around 15 inches but it’s sadly split down the middle and the handle is in 2 pieces. Shame too, beautiful hickory handle
Kinetic Energy delivered = 1/2 mass x square of velocity. The addition of a handle and the arm is principally guidance if it is just 'dropped' to the impact point, but the weight and muscular force can be added to increase the energy delivered to the target. Also, increasing the speed increases the energy more effectively than increasing the mass, i.e. a lighter hammer moving faster can impart more energy.
Bob Blarney .
"Travis in a gif" I'm still laughing.
My first boss and tradesman , swore by a wood handled claw hammer , and hated Stanley and Estwing hammers . I decided he was wrong 30 years ago , and have used Estwings ever since . I am just now considering a 14 Oz Stiletto like your own . I guess I've come round full circle 🤔
I am very much enjoying your channel you have such a pleasant demeanor and are clearly a professional craftsman. Question. I know you are very much a master carpenter but I know you came to blacksmithing later. I am not a blacksmith of any sort so I can't tell but at what level would you assess your blacksmithing ability at? (Master, Journeyman, Apprentice, or some other hobbiest sort of classification?)
Essential Craftsman
A good mentor can expedite your abilities many times over !
I still think I can beat Scott in arm wrestling.
It's on video, I think Nate and Scott will release in their own time.
I don't think you want any of ralphie travis
+Engineered Woodworking and DIY I wanna see it. ;)
I had the pleasure of witnessing Scott arm wrestle my big brother many years ago. My bro has some of the biggest arms of anyone I know and may as well live in the gym. At the time - I thought he'd beat Scott without much trouble at all (nobody we knew could last 2 seconds against him).
It was a complete dead-lock.
EC is a strong dude. Still something my family talks about to this day...
Thcott
Would a leather face on the heavy wooden mallet prevent it from burning easily and improve its lifespan?
On the wooden hammer could the striking faces be made to be replaceable
For a wooden hammer have you ever heard of Ipe it is supper hard and very fire resistance and heavy 1 foot of 5/4 6 weighs 2 lb
Can you adapt a hammer to that purpose by affixing a hard wooden face to an otherwise metal "normal" type of hammer? Might make for a good video. Might not :) cheers
I second being curious about that approach. I'm sure Scott would have the best guess about what adhesive or other technique to use if satisfactory results could be achieved by any means.
I believe it would be possible to "bury" a 8-12 oz. ball peen hammer in a block of hard maple by creating a fitted pocket in two halves then gluing or screwing them together. This combination would add necessary weight without marring delicate work.
Ellie Price tight wire wrapped wood "casing" perhaps? Stainless hose clamp?
I bet the wood wouldn't resist for a long time... maybe if you glue it around the hammer, with pieces of strong leather between the wood and the metal... Must me more work that creating a wooden hammer!
Anchor Bait: Stainless wire or clamp a great idea. Maybe a round split maple head with a 1.0 square length of steel or brass inside would simplify the pocket.
I’m going to weld a hammer head to my crescent wrench...
Fun fact, the ancient sling was so damn powerful because it took advantage of that same multiplication of forces by acting as an additional lever on the arm.
If I won the lottery, I might set up a shop like yours and just start making things with my friends.
the handle is almost the opposite of how a lever is used
in the hammer's case we are trading an acceptable increase in effort at our wrist in exchange for a gain in Velocity at the hammers head..because we want max kinetic Energy : k=1/2mv^2
The handle could be replaced with a rope for this example, the wrist (or elbow etc) is the center of rotation, "whipping". Of course a rigid handle has some other nice features in the world of hammers ;-)
You're actually storing the energy in the hammer (and your arm/muscles) when you raise it up, not during the swing. Once it's released from its top starting position, you're using the stored energy changing potential (static) energy into kinetic (active) energy with the help of gravity and the muscles in your arm.