Support what we do at www.kmtools.com *Katz-Moses Woodworker’s Apron* kmtools.com/collections/katz-moses-tools *Brand New Lineup of CMT Chrome Saw Blades use code KMT10CMT for extra 10% off* kmtools.com/collections/cmt-saw-blades *Flammy’s Math for Woodworkers* - kzread.info/dash/bejne/i4CLmdimkdebf8o.html *Flammable Maths* - kzread.info *Table Saw Tune Up Video* kzread.info/dash/bejne/q4aVspKJmri7kZs.html

You do have to spend some time setting the saw up... blade, fence, etc. But once done, the saw is great. Fairly compact which is Nice kzread.infoUgkxXh-4_3-ZT1fFWP91ZV7iVqzElr0lEb-a I did get an Incra Miter Gauge which takes some setup as well. The stock miter gauge can be adjusted in the miter slot with a little painter's tape... this tightens up the side to side play a lot.

Years ago I heard my neighbor working in his garage, the table saw and vac system was always noticeable. I was on my back patio cooking chicken on the grill. I thought I heard something screeching like a belt on a pully, I walked around that side of my house but all I could hear was his shop tools running, so I went back to my patio. About 10 minutes later I heard a woman screaming and I ran towards my neighbors house. As I entered the open door of his garage/shop, I saw his wife on her knees back in the corner, still screaming. I ran in and saw my neighbor laying on his back with a long narrow strip of wood sticking out of his neck by his collar bone. I walked to the wall by the door into the house and used the phone on the wall and called 911. I went to her and got her to stop screaming. I knelt by him and checked his pulse and realized he was breathing, but slow and easy like he was just sleeping. After about 10 minutes Fire & Rescue showed up. They revived him with smelling salts and a whole lot more screaming ensued. They calmed him, packed around the wood with gauze pads and placed him on a board and took him away in the ambulance with the wood still sticking out of his collarbone area. That was a case of kickback that I will never forget. I didn't see that the wood had went clear through his shoulder blade in back also. No arteries or veins were hit, didn't see a lot of blood at all but he had a 14 inch long, 1 3/4 inch square piece of maple in him. He also had a broken nose and concussion from hitting the floor. He survived but the garage shop didn't. His wife put her foot down. The garage became a garage only after that.

@RockHardWoodDaddy

2 жыл бұрын

holy fuck D:

My kickback happened in High School shop class. The piece I was cross-cutting was pinched between the blade and the fence. It flew over my right shoulder and dented the wall behind me. I will never forget it. My shop teacher made sure I was ok before asking me what happened and what I learned. I was given the rest of the period off to let the adrenaline dissipate. Thank you Mr. Heinrich.

@weekendwarrior3420

Жыл бұрын

I hope _he_ learned from this negligence of his and thanked God for saving him.

@jdrex5039

9 ай бұрын

The same thing happened to me. Hit me square in the balls. Let's say I got a free vasectomy out of that in 12th grade 😅

@dannyarcher

9 ай бұрын

@@weekendwarrior3420woke!!! Doesn’t surprise me your call sign is weekend warrior Without this incident the author would never have learned. Why is your first focus to blame the teacher….. he’s teaching.

@weekendwarrior3420

9 ай бұрын

@@dannyarcher Because the teacher shouldn't let students use the saw before he made sure they know how. This thing can literally leave someone without an eye or fingers - I'd not like my child to be in that position. You obviously are OK with it.

@weekendwarrior3420

9 ай бұрын

@@jdrex5039 Next time don't feed wood with your legs.

Thanks for having me Jonathan, that was a blast (in the true sense :D)

@katzmosestools

2 жыл бұрын

Your math for Woodworkers series is great! Thanks for all your help!

@mal-t

2 жыл бұрын

First: awesome video! Second: you asumed the piece of wood took the entire 60cm to accelerate. But effectively the wood only accelerates while in contact with the blade. Shouldn't we run the numbers only for that short distance? Without counting frames I assume the acceleration would be much higher.

@gcranston83

2 жыл бұрын

@@mal-tYou're right. Also, this is just estimating the force the blade places on the piece, not the force the piece will put on the operator. Since we don't have any information about the impact we can't calculate forces/impulses there. Instead, you might calculate the velocity of the piece _after_ it leaves the blade, then calculate energy the block has, and compare that to the energy in the bullet or the energy of a JKM falling from various heights. If you really want the force from the blade on the piece, and we allow the constant acceleration assumption for convenience, it might be more accurate to get the velocity after the piece leaves the blade and divide by the time from the instant the piece starts to move backwards to the instant it leaves the blade. Last one, and I'll get off my soapbox. The force of 130 lbf should really compared to (some fraction) of a JKM standing on your chest, not dropping from some height.

@JR-xt1bj

2 жыл бұрын

@@gcranston83 You are right, too. The force on the Operator can be computed, if you divide the change of momentum of the flying piece by the time it hitting the Operator. The correct numbers would be very interesting.

@gcranston83

2 жыл бұрын

@@JR-xt1bj right, but we have no information about that impact, so all we can talk about--at least in terms of numbers--is the energy (or momentum) the block has when it leaves the blade.

That YT video should be shown to EVERY person who buys a table saw. They are a really dangerous tool used in the wrong untrained hands. Well done JKM and thanks for all your time and effort to put it together.

@larryjanson4011

19 күн бұрын

also that company that built the “auto” stop needs to be told to allow all table saw manf to install there product in thee products. yes at a low price. as it will save many fingers snd lives.

@HobbyOrganist

14 күн бұрын

And the portable/cheap/small ones are basically little more than a flimsy table with a circular saw mounted underneath

Great video Jonathan! Lots of food for thought! Though, are we not going to talk about how the ballistic gel dummy, from sheer shock and confusion alone, fell forward into the running blade? While a kickback is awful, let's not forget that getting knocked out in the workshop can have lots of other unforeseen consequences.

@katzmosestools

2 жыл бұрын

Yeah I was so mesmerized with all the footage that I forgot to talk about that. Great point!

@HandToolBuilds

2 жыл бұрын

Imagine explaining that the Saw Stop saved your face! At least what's left of it after stopping a chunk of wood with it.

@abrahamlincoln5283

2 жыл бұрын

@@HandToolBuilds The saw stop would not be activated unless your finger or a hotdog hit the blade.

@christobar

2 жыл бұрын

@@abrahamlincoln5283 or your face.

@jmac2o229

2 жыл бұрын

@@abrahamlincoln5283 your body creates a path to ground, no matter what part. your dong would activate ffs

Damn, that maths boy was a great addition to the video, who is that young gentleman? :^)

@katzmosestools

2 жыл бұрын

Thanks for all your help my friend! Really added a lot to the video.

@PapaFlammy69

2 жыл бұрын

@@katzmosestools The video turned out great, such amazing footage!

Such awesome information. Footage was epic and I love how you explained everything. great job brother

A woodworker with a Mandelbrot set flag in his workshop??!!! Love this guy.

Jon, Just experienced this very thing. My mistake entirely. Mistake #1. I was working while tired Mistake #2. I was using the fence instead of the crosscut sled. The wood piece was short and I should have realized it but go back to mistake #1. I pushed it through and by the time I realized what was happening it was over. The piece of Meranti bounced in some weird way and I wound up with a bruise on my right arm from the wrist area to about 6” to my elbow with it being from 1”-4” wide AND somehow the piece struck my right abdominal area about an inch to the right of my belly button and about 2” north of there and left a gash about 3.5” long. It’s almost healed but damm …it hurt. Not fun. Thanks for the video!

Great video! Before retirement, I took care of 4 DIY home woodworkers in the operating room (anesthesiologist), one of the workers we saw twice. He was a lifetime woodworker, and after seeing this video I wonder if his table saw was not adjusted properly. These were horrible injuries, one man partially losing his thumb, and later his index finger to Kickback injuries. We never saw any fingers lost to the spinning blade. These injuries usually occurred after 9pm, when they were working in their workshops, after working their regular shift day job.. I can only guess that they were tired and therefore less careful.

@fastcode1772

2 жыл бұрын

I wonder if tablesaws are particularly prone to fostering "normalization of deviance" behavior w.r.t. safety protocols. I.e., the protocols seem unnecessary for 1000 cuts, so why bother with them?

@freds4703

2 жыл бұрын

I lost just the tip of a finger and a fingernail to a dado blade. I learned two important things. Do not work late at night or when you are tired. Do not try to feed small parts by hand.

@feastoncarolina9544

21 күн бұрын

What was their bac when they came in?

@jimlelan4906

14 күн бұрын

@@feastoncarolina9544 Stone, Cold, Sober…

@jimlelan4906

14 күн бұрын

@@fastcode1772 I just saw your comment. I have never even had any formal training in table saw use(high school woodshop). So I try to learn everything I can.

6:08 The heavier something is, the more its going to hit you in the face. I absolutely love the collaboration with Flammable Maths. Well done JKM!

The one and only time I’ve had a kickback on a table saw is when I was rushing and cutting corners so to speak. This is the best video on table saw kickbacks ive seen on KZread, thank you very much Jonathan, you will save some people serious injuries with this video.

Yeah, I did an "experiment" 20 years ago kind of like this. I was ripping maple table legs about 2 inches square. I was not using a proper push stick and my old 1954 table saw an elderly neighbor gave me had no blade guard. The push stick was a 3/4 inch by 3/4 inch by 18 inch length of red oak. With a 45 degree end which I was holding. After I finished the forth leg I got sloppy bringing the push stick back, and I let it swing a little and it caught the top of the blade. Bang! It shot right into my forearm. Sank in about 3 inches, in and up my arm, almost to the crook of my elbow. I now have proper safety equipment on the saw, and proper push sticks, feather boards, etc. And a very health respect for kickbacks. I still have the bloodstained "push stick" in my workbench for a reminder. And of course I should add: Never stand in the line of fire. Great video.

This is wild Jonathan! Thanks for spending the time to explain this and show it in such a fun way! These videos are so informative.

My Great Grandfather was killed in his Reno NV cabinet shop by a TS Kickback. It happened in 1920. From what my great aunt told us it was a 1"×1" piece the hit him in punctured his gut and he died of infection. You bet you I respect TSs. And use a riving knife, googles, thick shirt, etc and stand to one side. Definitely makes me a careful user of a TS.

fantastic video, great footage and great support from other TouTubers. The double kickback was pretty shocking, even the ballistics gel dummy wet itself at 10:48!

Thank for this. I had my first kick-back earlier this year. Hit me in the ribs and left a gnarly bruise and an abrasion the exact size and shape of the 3/4” plywood I was using. Luckily, no broken ribs. It scared he bejesus out of me and I have even more respect for the tool. Making sure I take all your pointers!

Really makes you think, when you see the forces involved. Great video Jonathan, thank you.

I appreciate all your videos! I want to get a table saw eventually and all of your videos (not just on table saws but wood working in general) I’ve learned so much. How to be safe, how to be more precise, and how to just be a better wood worker in general. So much knowledge that you could just keep to yourself, but you teach so many! I really appreciate it so much, I’m a really big fan and just so appreciative!

Been looking forward to seeing this ever since you first announced it. Nailed it once again, great work! No doubt this will change some of the bad practices/information that we've all grown far too comfortable seeing 👏

@PapaFlammy69

2 жыл бұрын

definitely, Matt! :)

@PapaFlammy69

2 жыл бұрын

Btw, hit me up if you ever need a maths guytocalculate the water flow for your next river table :p

@katzmosestools

2 жыл бұрын

Seriously!

What a great video! Thanks for all your effort putting these together. It really comes through how much you care and enjoy what you do. Cheers!

Thanks for doing this, Jonathan. This information is so vitally important! Now it’s up to all of us to spread the word to all of those that think table saw safety is not important.

This is absolutely next level - 5 million+ views incoming. Well done dude

@katzmosestools

2 жыл бұрын

Thanks bud! Finger 🤞

Guy I used to work with was pushing a piece about twice the length of the piece you were using in the video through a 5 HP saw and got it right in the ribs. He had two broken ribs and a cut about 3 inches long. The bruising he had was hard to even look at. Ive had kickback on the miter saw that messed my fingers up pretty good but nothing broken. Ive never personally had it with the tablesaw but I was taught from a young age to keep control of the work piece. Safe cuts everyone and happy holidays

Another outstanding video Jonathan. While I’ve not experienced the dramatic kickback incidents that others have reported I have experienced some. That’s one reason I was among the earplugs purchasers of a SawStop. In addition to the brake it also has, as you pointed out, a riving knife. I know many woodworkers don’t realize the value of having one on their saws and often leave it off like they do with their guard. Hopefully some of those people will see this video and realize why that’s a dangerous practice. The reply from the medical worker who noticed that many table saw accidents happen at night when people are tired. It’s been my practice for many years not to work with any shop power tools when I’m tired. I’m sure that’s helped me to prevent any accidents so far. As I’ve gotten older that practice has become even more important and I’ve done even more to prevent accidents. If I’m going to do a major operation on any of my tools I set up the matching for the operation I plan to do then I leave it, if possible over night, and go back later to perform the task after rechecking everything for accuracy and safety. I’m never in a hurry or tired when working with any power tools.

Three or so years ago, I was rip cutting a short (9") 2 x 6. I always use a riving knife but in this case I had been lazy and hadn't retracted the blade from a cut I had made previously on a 3 x 3 piece. I also hadn't taken the time to clear some chippings from the bottom edge of the fence. Needless to say, the riving knife saved me from a potentially more serious injury but the piece rolled over the top of the knife and rode the top of the blade and caught my right arm just above the elbow. Thankfully I got away with some serious bruising but it made me completely rethink and then revamp my entire workshop specifically to preserve life (namely mine) and avoid as many future issues as possible. Needless to say, laziness in a workshop WILL MDK you. Don't be like the old me, take the time you need to make safe cuts, it WILL save your life.

Jonathan, that is a GREAT video - from a safety/teaching aspect - very very well done! Keep up the great work!

I honestly really appreciate how clean that guys chalk boards were

@PapaFlammy69

2 жыл бұрын

it always is :p

By far one of my favorite videos you've made. Great content.

Thanks Jonathan great to hear you reiterating safety with the table saw. Never hurts to be reminded. keep up the good work

Wow! Thanks for taking the time to film and share this!

Great video. Love that your videos are content dense yet can easily be followed. There is a clear flow and conclusion. Very professional and enjoyable to watch, as always!

The most important lesson of all: never fall over the spinning blade like the dummy. 😳 Fantastic video and tips, Jonathan! Thanks a lot! Merry Christmas! And stay safe there with your family! 🖖😊

Great timing! Got a nice kickback this morning that busted my knuckles pretty good

Although I’ve never been hit with a flying chunk of wood, I’ve had a pretty scary experience with kickback that doesn’t get talked about all that much. I have a yellow contractors saw and it’s really not that powerful. Well, one day I was rushing through a cut(3/4” plywood) because I was too comfortable with the tool and boom… it happened. Here’s where it gets worse. Instead of immediately removing my hands from the danger zone and crouching or moving out of the way, I thought I could overpower the saw and hold the workpiece down with the crappy little push block I was using. Turns out I was right… that time. I was beyond lucky that I didn’t lose a hand or an eye doing something so incredibly stupid. It’s not always the dangers you know about that will get you. Sometimes it’s something that you never even think about doing that could cost you. Now, I practice every cut before I make it(thank you Steve Ramsey) and I go through my project plans to anticipate what could most likely go wrong with each operation. May seem like overkill, but I’m not taking any chances. Edit: Forgot to say thank you, Jonathan, for all of your contributions to safety in the woodworking/making community.

Thank you both for this! I always love your attention to detail!

This is such an awesome video!!! So satisfying on so many levels. Thank you for making it.

Thanks JKM for the great content. Merry Christmas and Happy New Year!

Your videos production quality is getting insane. The equivalent of a top notch hbo documentary. Well done mate. Well done.

I saved the link to this video before it was even two minutes in because this is important info. Many thanks for doing this.

Incredible. Great content!

For all those that say you will never use that dreaded Algebra after high school . Here it is in use to show the force of kick back from a Table Saw.

Nice work! Nice shots with the TMX from all your Vision Research friends!

I was an outlier. Working in the carpentry shop on USCG base NOLA 1979 and I was at the end of a 114-degree day in New Orleans and dreaming of cold beer. I was almost done with a bunch of boring repetitive cuts and was hurrying to finish. I ran a piece through and got the bang! kickback. I was hit right in the brass belt buckle. If I was a skosh taller I would never have met my son. No riving knife, no blade guard, no safety glasses, a cabinet Delta Unisaw. EXTREMELY LUCKY. Great video. Thanks for the link to the professor too.

Great video Jonathan. Definitely much easier to watch than videos of actual near miss kickback. Great comment about wearing PPE, including an apron. A 1/2-inch cutoff piece kicked back into my Katz-Moses woodworker's apron and I didn't feel a thing. Standing to the side also helped.

Thank you for the vid man. I'm a new woodworker and had no idea that these kind of forces were in play while using a table saw!

I once had kick back from a home made table saw that I built. The piece shattered on the wall behind me, it missed my face by inches. My solution was to dismantle the table saw and I have never had the confidence to use another one. Very interesting video, thanks.

@Strongtower

2 жыл бұрын

Get a real table saw from the store and try again. Don't give up

I heard you mention this camera and your plans for this video on Steve Ramsay’s podcast. This video was fascinating to watch. Thanks so much for making it.

Great job Jonathan and team. 2014...~600 hours behind a PM66--insufficient downward force on a dado stack. 1 lb chunk of mahogany hit me in the gut and caused internal bleeding and three days of constipation. A push block would have given me the confidence to push the workpiece down hard enough to have avoided the kickback.

Excellent video Jonathan, great thank you for sharing and going through all the length to shoot and explain this. Spot on!

This is a very real lesson. Great work on showing the very real dangers and preventing them.

Great seeing ya n happy holidays

Thank you for this video. August 23rd 2015 I was careless and paid for it by getting impaled by a piece ¾"X¾"X40"ish hickory. It penetrated my abdominal cavity an inch. What's really impressive is that I almost got out of the way. You can see the angle of trajectory in the scar. It took 16 years to get my first severe injury from carpentry. It was so preventable that

Love the Mythbuster level camera work and science explanation! Also thanks for giving me another good reason to stick with my hand tools. That's scary af!

Awesome video... I got a kick back this time last year and had a nasty bruise on my stomach that left a life time scare to remind me that I was lazy in the shop and didn't re-install the riving knife. Keep up the great video's and Cheers to the New Year..

Hey Johnathan, I appreciate your video! The slow motion is very cool and making people take this risk seriously is important work! Thanks for what you do with your channel and your foundation! I felt like you neglected a few key things though… all your examples where short chunks. That’s definitely the highest risk for kickback but it can happen with long strips too. I’ve seen videos of board lodges in the wall… Also, my kickback experience wasn’t the whole board, I had a knot from a pine 1x4 come loose when it hit the blade at it hit my eye before I could even blink. Luckily I only had a minor abrasion but I could have lost my eye. Needless to say I never forego my eye protection anymore. Finally, vertical feather boards!!!! I think they have been the most important prevention improvement I’ve made since push sticks! I use the one from MagSwitch but clamping a board to the fence works great too

Poor Danny got throat punched by that wood! Thank you for the explanation of the various guides (different guide sticks and feather board) and their purposes. That was very helpful for me.

Wow great shots! If this video doesn't convince you to play it as safe as possible around the table saw (and any power tool, for that matter!), then can't imagine what would. Great video, thanks much for it!

This is SO cool and educational. Seriously what a great idea

Important, excellent information and demos. Thanks for sharing this.

I do wish you’d spent longer on what causes kickbacks. But thank you for making this one! Such an important video

Really scary video! I am kick back aware, but that video made me review everything about my practices. Thank you

Nice video! To me, the really key safety technique is to not stand in "the line of fire". Kickbacks will occasionally happen even with precautions, and not being in the way is a great backup safety plan. One of the best ways to accomplish that is to be using a European style sliding table saw, rather than the American style fixed-table saw that's common in the USA. Unfortunately sliding table saws in the USA tend to be expensive. To my knowledge, Grizzly makes the cheapest one, which will still run you ~$4500. So they're not really accessible for amateur wood workers. But for anyone running a professional woodworking shop, the price is less of an issue, and the safety improvement is immense. Used machines will cost less, of course. And readers in Europe will have an easier time finding affordable machines.

Good stuff,Johnathan, one more reason I'm glad I bought your shop apron.

Fantastic Video! Thanks

Lincoln St.Woodworks told me to come here and check your videos and I have to say WOW! I'm loving it. Haven't used my Parklife table saw yet (might have ended up being a waste of £150) but I was always careful of kickback with my mitre and circular saws. This video however was on another level!

I had bad kickback a couple of months ago had a board hit me in the shoulder. It cut me open and left a bruise for over a month I still have a knot it the spot it hit. Thank you for breaking it down now I know what happened to me. Love your channel keep up the great work.

Excellent video! Even though my head hurts from all the math I learned a lot.

Great video!! I had kickback last year and surgery on my hand one year ago on the 30th from a nasty kickback had to have a plate and 14 screws put in. Kickback is no joke!

I can't remember how many bruises I've had on my tummy from kickback. I volunteer in a 50+ woodshop, and now a riving knife is mandatory when the cuts allow it. However, as you know, not all cuts allow for a riving knife to be used. So, I've bought leather and a friend is going to make me an apron. Kick back is NO joke. I've seen entire jigs thrown 30 feet across a shop. Luckily, there was no one in the way or there would certainly have been significant injury to anyone in the path of the jig. While I get that the magnetic feather boards are great, but sometimes (because of the distance from the miter slot to the blade), the mag jig ends up over the slot and the magnets don't hold. Making an old-fashioned feather board is a must. An aux fence that extends just past the blade is an option we've found helpful. Place a sacrificial fence to extend just beyond the blade, but not far into where the riving knife lives. This way, as you feed through the entire cut, the piece will end up in a wider space and thus, not get trapped against either the riving knife or the blade.

Fun to watch and a good reminder that safety always matters.

This is so chilling to see what could happen and how fast it does happen.

Poor Danny! Right in the kisser! Seriously, very interesting! Thanks for sharing.

My kickback experience: After the board just passed by the cheap Harbor freight featherboard, one of the feathers came into contact with the blade. The thing exploded off the table and flew past my face at mach 1. Two lessons learned.

Gosh I’m glad there are people this smart in the world.

As a dude who dealt with dado blade kick back (my fault) got my hand shoved on the blade and had a nice exfoliation of my thumb and thumb nail (my fault) after I got over it and replaying how bad it could have been, I got back to building, but I’ve been waiting for this video everyday for a month. This made a great Christmas, better because I see something like this and learn how I messed up. Thanks for doing this. Glad your thumb looks good JKM. Mine as well. Happy new year.

Great video, advice and demonstration. I have been using a table saw for many years and have been fortunate I have not been clobbered by flying wood. Through no one's fault but my own, I have fortunately been in a couple near misses where the board went one way and I was in the other direction (quite memorable). Staying out of the line of fire is important. I will make sure a few woodworking friends get to see this video.

Yes, these are no toys. Bandsaws do not have these issues. A major reason for kickback was not mentioned, if I recall correctly - tension in the wood that is released when ripping solid woods. Tension is released, the piece of wood expands, presses against fence and teeth. In Europe, many pro saws have a slidable second fence. You position it at the middle of the saw blade. It creates a gap between main (ripping) fence and the adjustable fence attached to it, so wood can safely expand at/ after the cut. Had a kickback on a small chop saw with a tiny piece of oak 1x1 inch diameter. Hit my hand hard, made a cut and bled. Shock was worse than pain actually. Thanks for great video!

I love your videos. So informative. Thanks man

Nice presentation. Appreciated you including the math (metric makes the calculations much simpler!)! Nicely done.

What a great video. As a new woodworker this scares the crap out of me, so I try and be hyper vigilant, but there is so much I don't know yet which is why these videos, while they scare me, keep me laser focused with ALL tools. Please keep making these videos and I am going to buy an apron soon for the PPP aspect.

@timothyball3144

2 жыл бұрын

Not knowing how things can hurt you may be the most dangerous part of doing anything. That's why the Army taught PPE for nocturnal excursions.

Thank you for the info & time spent doing the demo!!!!! 👍🙏

Thanks for a very informative video. I appreciate the effort you made to demonstrate the physics and math behind everyday aspects of our lives. Kickback BAD. Being safe GOOD.

Now that was cool. Both cutting Danny's head off in slow mo and the information. Never realized just how much an apron would protect you.

Put a hole through the wall in my garage due to a bad kickback. I was using a pushstick and standing to the side so no blood was shed in the learning of this lesson, thankfully. Thanks for this video!

I would think that case-hardened wood* also poses a danger of kickbacks. *Improperly dried lumber can cause the surface of a board to be in compression and the inside to be in tension and lead to a board pinching when being cut. (As I understand the process as explained by Stumpy Nubs)

Tablesaw accidents are so common, yet most of them are extremely preventable with these "basic" safety techniques and proper equipment (like push sticks, featherboards, and Micro-Jigs). BTW: Forrest actually recommends to run their blades high (just past the gullet) to keep the carbide cool. Good info man!

@AndrewWade77

2 жыл бұрын

Yeah, I’ve never heard the advice to keep the blade so low. I don’t understand how having a full tooth extending above the wood could cause kickback.

GREAT stuff, Jonathan. You covered some points I haven't seen on YT regarding kickbacks, and I certainly don't want to get smacked in the chest with 1/2 of a JKM moving at high speed! One item I noticed using your example is the length of the board being ripped. I was always paranoid ripping really short pieces, as it seemed easier for the board to lift on the rear of the blade. I would rip a longer piece first, then cross cut. Regarding those chicken foot push sticks, they are almost worse ( in some instances) than none at all.

@bobd5119

2 жыл бұрын

Re: "I would rip a longer piece first, then cross cut." Yup. Me too. I have clamped a board to the fence to hold the workpiece down.

Always great videos. Thanks again.

Another great video, JKM. I'm curious, have you tried to get your jig to create a kickback with the riving knife on? If so, were you able to do it? Just wondering how effective riving knives are. Thanks for all you do!

@adamcoe

4 ай бұрын

They're VERY effective. Bulletproof? No, but nothing is. But a riving knife/splitter is incredibly important in terms of not letting the wood get pinched behind the blade.

Very important video!!!!! Thanks for all the slow motion video and backing it with science and for life savings tips!!! safety first. Thanks ( todah). Happy new year for you and your team!!!

Excellent - scary - education. I have an old (1980) Craftsman table saw. No riving knife. Guard with kickback pawls and splitter mounted to an extension at the back of the table - impossible to align, dangerous to use (when board hung up). After replacing the fence, I added Jess Em stock guides. Pull board against fence. Wheels only turn one way to prevent kickback. Also use a magnetic feather board. So far (years) they have done the job - except for once (proving stupidity can overcome even the best prevention). I also stand to the right as far as possible without jeopardizing control. I remember from when my daughter played Little league baseball that taking a solid hit to the center of the chest (like a line drive) could have fatal results - even if it only left a bruise. Called “Commotio Cordis”.

Great video! Last March I had a kick back due to not having my riving knife installed and broke my hand. Scary stuff.

Fantastic piece of information. Thanks for this. Very informative.

Thank you for all you do!!!!

This was really interesting to see, lots of good information here and good points to think about. My table saw is an old (early to mid 80's if I had to guess) 12" direct drive Craftsman, given to me by my father-in-law who got it from a friend who passed away. It's got plenty of power and runs great, but I've never had the guard assembly for it and have always been super careful when using it. If anybody has a good resource for finding parts like this, I'd love to hear it. Thanks for sharing!

Great video as always! You’re right, we’ve all had kickback stories. Mine was a 1x3 that went past me (of course I was off to the left side), and almost went through a hollow basement door about 8’ behind the tablesaw. But anyway, my complaint is that you should’ve used Nicholas Cage instead of Danny Devito. Nick’s career wouldn’t be as affected. All hail Danny!!!

Something that happened to me when I was working in a cabinet shop, many many years ago. They had an old delta sliding table scoring table saw run off 3 phase,600W (I think). The thing was a monster. Because it was old, and it had the sliding table, the blade tilted towards the fence, so the motor wouldn't foul on the slider. One job I was working on required 2x2 material to have miters meeting at the peak of each board. If you can picture the setup being the blade tilted towards the fence, the fence moved very close to the blade, and not much room between them. We had a push stick, but it was the tiny birdsmouth kind, made out of rock maple. So off I go cutting these pieces... the first cuts were fairly easy, there was enough wood to hold the push stick against the fence and it cleared the blade. The fun happened on the second pass... Now the push stick had to be held at an angle and the blade would kiss the side of the push stick. That is, until I tried to reposition the push stick on one cut because it felt like the board wasn't supported. I have never felt such pain in my hand. Imagine getting hit in the palm with a baseball bat at MLB strength. The push stick shattered on the blade, sending most of the force through my hand, and throwing the rest with suck force in the cinderblock wall behind me to crack a block. I had twisted the push stick while it was engaged with the blade, and because it was had wood, it had zero give. My had was useless for 3 weeks. It bruised instantly, and I had problems moving my fingers. I now only use push sticks made out of easily chewable material... laminations of hardboard, pine, etc. If it happens again (probably won't, because I know better now) the blade should chew the push stick more than eating my hand.