Can Dangerous Saw Blades Cut Wood?

[@McSpicyYT]

Each time this channel uploads is a miracle just because that means they haven't died to one of their ideas yet.

[@cardboard4929]

Why do you think they lost half the old team?

[@andyanderson2143]

RIP old team

[@patrickday4206]

Maybe just a maiming 😂

[@DrRBTNK]

I love it when people don't die.

[@bela3565]

They? Isn't obvious that ThEy are a guy?

[@jwayneair]

None of them have the teeth at even close to an effective angle. All of these are literally beating the wood hard enough to “cut” it. There is no actual cutting taking place. Except the pentagon, it had 5 teeth at an effective angle.

[@ianbelletti6241]

I'd like to see this experiment done again without the teeth cut in the various shapes as a comparison.

[@Leonarco333]

But still with no relief angle so still barely cutting.

[@HolmesHobbies]

"Beating the wood hard" 😂😂😂

[@jwayneair]

@@HolmesHobbies 🤣🤣🤣🤣💀

[@Rick-if5zb]

The only thing that was impressive was the water jet cutting. The rest was kinda ignorant. So no like and no subscribe.

[@JustHarrison395]

Every one of these blades would have worked if you put the cutting point on the corner.

[@andyanderson2143]

Seriously. Need a re-do on this one.

[@tatehogan5685]

And agreed. Even filing a nice edge would have helped for the tests, but it would be funny to watch them try welding carbide tips

[@WaterjetChannel]

Yeah I should’ve just made the teeth on the corners a point. I was going for something that looked good and was strong while still cutting. I also wanted to die after spending 8 hours in CAD

[@satibel]

yeah we can see with the pentagon. I think aligned teeth + kerf would make them a lot better.

[@scottgoddard7794]

Was SHOUTING this at the video while watching. Definitely the cutting point positioning that was the biggest factor.

[@mystery_gamertm]

I love how he wears a face shield but does nothing to protect his legs that also have major arteries that could bleed him out in seconds 😅😅

[@DysfunctionNoMore]

Yep, his legs are right there, asking to be hit with flying metal...

[@mckennaConfig]

The blades the performed the best were because the teeth were closer to the correct geometry at the cutting surface. In most cases, the wood was impacting the back of the teeth which is why they were cutting so poorly. If you do this again, you have to design the teeth to be angled in reference to the center of rotation.

[@jefo2405]

Please don't do this again!

[@NoNo-ew3gd]

​@@jefo2405there are 2 types of people:

[@Oskanwhitchfather]

That's not even the main problem. A circle is used to cut via rotating blade because on a circle all points are the same distance away from center.

[@Nikicusyes]

i was a bit sad when you started with "because a hexagon is.. kinda the closest thing we have to a circle" and didn't say because the hexagon is the bestagon

[@NostalgiaforInfinity]

Why is modern "humor" so gay?

[@TheTransitmtl]

I love this. Although very popular online almost no one in my social/work life knows that hexagons are bestagons and I use it as a litmus test with new acquaintances

[@jones7399]

it wouldve been so much better if the geometry of the saw teeth were properly cut out lol

[@bobbytables4305]

This

[@pjinq]

yes but if it were then it would be a circle

[@ObservationofLimits]

What geometry? What rake? You're just saying things to sound smart without actually understanding.

[@jones7399]

@@ObservationofLimits wow, so rude and aggressive for no reason

[@bismuth7730]

Yeah this was incredibly half assed. Not only the geometry of teeth but also them being equally wide as the body of the blade. Cringe

[@finnz9539]

<a href="#" class="seekto" data-time="16">0:16</a> you chasing after the drone footage and trying to speak at the same time was peak humor for me, thank you so much for that

[@insu_na]

After having made dozens of different blades for different videos... they still don't know how saw teeth geometry works. I think this incredible resistance to learning should be celebrated.

[@mrrw0lf]

same thought

[@ariabritton9669]

the absolute lack of safety in this video is disgusting to me. it's not even a "badass" lack of safety, it's just 100% stupidity, like running a miter saw without a blade guard and reaching towards the part while the blade is still spinning.

[@rooftopmentality1996]

i would like to see proper teeth on the blades

[@polyesterdreamboat]

I think all of the blade shapes would cut better if they SHARPENED THE FUCKING TEETH

[@TombVali]

@@ariabritton9669 💀

[@sane_scientist]

waterjet channel is officially the new "need something to watch while im eating" channel. absolutely killing it dude, great work and spastic ideas

[@nnelg8139]

The problem is the orientation of the teeth on the part of the blade that first contacts the surface, i.e. the corners. As you saw, the teeth on the corners weren't contacting the wood with their cutting edge, so you weren't actually cutting the wood with any of them but the last one, but rather pulverizing them into oblivion.

[@LeafBoye]

Isn't that the same thing that happened to the others?

[@timwaeyaert8339]

I was going to say the same thing the cutting blade is not aligned to touch the wood properly.

[@creakiap]

<a href="#" class="seekto" data-time="21">0:21</a> Why is he starting to run after the cameraman as if he wants to test his weird saw blades on him?

[@neaituppi7306]

The camera person decided they didn't want to witness death and dismemberment.

[@gavinbrockis]

@@neaituppi7306 Camera person realised they had better things to do than watch this garbage. As did I after 37 seconds of this video.

[@XyloZaki]

​@@gavinbrockiswhy go through all this trouble to click on the video watch through 37 seconds only to realize you don't like it and then complain?

[@Gpcas9]

<a href="#" class="seekto" data-time="221">3:41</a> Hexagons are the bestagons! 🐝

[@ChevyTech68]

I could have sworn that was what he was going to say lol

[@HexaBurger]

Can't disagree

[@kokokiller8656]

Okay grey

[@Jokke13th]

Agreed.

[@CharlesGreysonBench]

YES

[@AnnaleiseLattimer]

Bro knew he had to blur the goods. <a href="#" class="seekto" data-time="48">0:48</a>

[@WaterjetChannel]

You can never be too careful these days 🌝

[@UrDadsFavouriteMaleEscort]

Its just good business. Keep the people wanting.

[@ThylineTheGay]

@@WaterjetChannel wikifeet people are always watching

[@gula928]

​@@WaterjetChannel thanks for the translation into Russian 😅

[@athul_c1375]

Give them for free ?! In this economy

[@readjordan2257]

As someone whos worked in wood moulding and was a saw box operator (low rank promotion) i can assure you, even a round sawblade that's broken in a way similar to the thumbnail (just shattered instead of intentionally shaped that way) can cut. The issue is it will burn the wood up. Not to the point of flames, just it will be like a charcoal steak and smell worse. Not to mention it will risk further fracturing, and being seized up on whatever its fastened to. Usually collars keep the sawblades tight to a rod that slices up the rectangular wood into french fry shaped sets, but when broken and burning up the wood and blade the collars can come loose and cause the blade to do some movement around, or cause it to become mega-fastened. Either way, you may need to use a special clamp to pinch the collar to where it cuts off, trashing the whole set. The rod the collar is fastened to may also need sanding or oiling or other maintenance to make it as smooth and even as it was originally.

[@asteroiderer]

The reason why the bar did so well is that, with the few teeth which were actually effective on it, you effectively made a dado blade. You made the equivalent of a circular saw blade that has been cut with two symmetrically placed parallel lines. And the reason why it did better than the circle is with that twist problem of reducing friction like you did with the teeth on the square; since both of them don't have the angled teeth, the circular one was dealing with more friction and less room for chips to escape, while the bar had plenty of air space for chips to escape inbetween hits.

[@phantomsrage6523]

yeah this entire video is pretty much summed up by: 1. is the blade stable? 2. are the teeth well placed?

[@justinholmes8297]

You cut the teeth wrong on every single blade.

[@thefreydog4383]

Okay that’s fine justin

[@vinnyvbg]

RIP Towely

[@aljazbrilj1698]

Rip towely

[@pewds6910]

RIP Towely

[@micahcarr2085]

RIP Towely

[@LudacrisBass]

rip towely

[@elliottwade1901]

RIP, Towelie

[@SC-RGX7]

<a href="#" class="seekto" data-time="227">3:47</a> ChrisFix's lawyers would like to have a word.

[@silygoose95]

Some of the blades were flawed because the teeth couldn't cut into the wood and just rubbed on the round side

[@MasherGamesYT]

<a href="#" class="seekto" data-time="48">0:48</a> he literally had to censor his feet, today’s society is doomed

[@Isosyth]

Yeah dude, I was there when John KZbin put a gun to his head and said "Censor them steppers, kid".

[@miltonthecat2240]

I imagine other comments have already mentioned this, but there was a triangular circular saw blade advertised on "As Seen On TV" back in the early to mid 90's. It's claim to fame was that it could cut circles and other curves. I bought one and used it exactly once, to cut out a large wood circle to make a Lazy Susan. I created a special table saw jig for this purpose. It worked well, although it scared the heck out of me even though my hands were nowhere near the blade, and it created an enormous pile of sawdust. The teeth were more finely spaced, maybe 15 TPI or thereabouts.

[@shrimplomein6509]

<a href="#" class="seekto" data-time="890">14:50</a> - Chop Saw only goes up and down. Miter Saw can cut angles and go up and down. Arbor Saw can go up and down and slide back and forth to cut wider wood. It looks like yall have an arbor saw, and a nice one at that lmao.

[@danielconnelly642]

Every saw blade is widest at the teeth, so it cuts a kerf for the rest of the saw to pass-through. Usually the teeth are bent to one side alternating back in forth. Take a nail set or punch and knock every other tooth to one side. Just like .1mm each side will make a big difference

[@Duck_side]

The reason this is done is to stabilise the saw. The kerf is a bonus but not the reason it's done

[@chriscarlcm]

Good suggestion for a call out in the video!

[@LordSchnoz]

@@Duck_side incorrect 👍 you have it the exact opposite way around. there's a reason zero kerf saws aren't sold, and it's not an issue of "stability"

[@Duck_side]

@@LordSchnoz let me guess, you read that on Wikipedia and have no actual practical experience with setting saws?

[@shmeggley]

@@Duck_side "Kerf is a bonus" says someone who has never cut wood before

[@rohghost]

RIP towely <a href="#" class="seekto" data-time="501">8:21</a>

[@markbennett8788]

Rip😢

[@armandasaleksiukaitis9509]

rip

[@joeblazer3429]

RIP towely

[@sebastianknight1793]

Tip towley

[@zunedog31]

Could have gotten your femoral artery closer

[@geronimo5537]

yeah I felt like it would have been even more safer if he leaned his face next to the wood while cutting. so much safety here.

[@hum4np3rs0n3]

This is my first time viewing this channel, how normal is this? Who am I kidding, these channels are always unhinged in the best ways

[@scythelord]

the pentagon did well solely because it was practically the only one with a pointy tooth at the outside edge. all the other designs were beating the wood fibers out of the way while the pentagon at least got the tip of one tooth to shred them. the bar as well.

[@mossar1357]

What about a single tooth saw blade

[@Zap_R0sdower]

<a href="#" class="seekto" data-time="276">4:36</a> I'm gonna lose sleep trying to figure out where that Will Smith joke was going.

[@pieguy203]

He said "aw that's hot" like Will Smith does in KZbin rewind 2018. Sorry if you didn't actually want an explanation.

[@PayterX]

@@pieguy203 No he said that afterwards after he already lost attention. He says exactly “It just can’t go through the rest of the way, only Will Smith because.. AH that’s hot! OUCH!” So he lost his train of thought before he was able to finish his joke and I also would like to know what the punchline was going to be

[@TorutheRedFox]

I'm pretty sure that the punchline was "aw that's hot" then he proceeded to accidentally touch it and burn himself

[@DustyQatun]

Yeah he was gonna say "ah that's hot" jokingly then touched and actually had to say "ah that's hot"

[@spark9189]

@@PayterX "ah, that's hot" was the punchline. because that's what will smith said in the 2018 rewind.

[@xOpenmikeknight]

This is content I didn’t know I needed in my life but now I’m glad I have it. It’s like watching a house burn down. It’s kinda scary but like also beautiful. You don’t want to look, but you also don’t want to look away.

[@V0latyleUSMC]

The teeth need to be angled properly for the cut. As long as the blade is balanced, any geometry will work, albeit not as efficiently as a round blade.

[@TheRjjrjjr]

Wouldn't it be nice to see the actual cutting surface of the blade cut the wood instead of the dull rounded part!?!

[@FisP3r]

Your poor neighbors are probably ordering a restraining order

[@nathanieljames7462]

You make it sound like they're pizzas. Like, can I get the RO Special with Cheese sticks and a bottle of Coke, please

[@iamgriff]

The reason a saw blade is circular, is because it works the best. Plus it has carbide teeth welded to the tip with a specific angle.

[@DragnEYE]

Making saw teeth that literally don't actually hit at the proper angle on the outside, and a shit ton of saw teeth that would never even have a chance to hit material. as "cool" as it looks, this was pretty pointless. Maybe try making a saw blade that only has 2 teeth, at opposite sides of each other and see how big the chips are. As long as you actually bother to make the teeth impact the material at all. The back edge of the tooth isn't going to cut as much as shatter and burn through material.

[@paradiselost9946]

they get views and comments. the algorithm is happy. revenue is made. that is the ONLY point. i just think of our ancestors screaming in their graves at how the human race is rapidly devolving.

[@insu_na]

hehehehehe pointless hehehehe

[@pixelfire86]

The trapezoid and crescent were so unstable because the center of mass of each wasn't aligned with the pivot point. All of the other sawblades were radially symmetric about the pivot point, so you didn't have to worry about the center of mass.

[@Amin_2k]

<a href="#" class="seekto" data-time="690">11:30</a> 😂😂 This joke alone earned you a sub from me

[@SeventhCatalyst]

jokes on you, i reinforce my toilet paper with flex glue

[@ConvincedIdiot]

you should really think about trying using a set of weights for the down-pressure. This seemed arbitrary in that way. Still, fun to watch.

[@lobster8009]

Yeah. Just some basics on sawblades. More teeth dont make the cut faster it just gives you a cleaner finish. Theres also a difference in blades that cut across the grain vs along the grain. Crosscut blades generally have smaller teeth and more of them, crosscutting generates dust and not really chips as such. Blades for cutting along the grain have less teeth and larger ones at that, that is the case because the chips generated from cutting along the grain are long, stringy and voluminous and the fewer large teeth have more room for chips so they dont clog up the blade causing burning. Why many blades just didnt perform is the tooth shape just wasnt right. It wasnt really a cutting edge that touched the wood so they really just rubbed their way thru.

[@ObservationofLimits]

That's not even getting into shape, rake, and tooth pattern. Finer saws generally cut SLOWER because the total gullet volume is less than on rough saws

[@paradiselost9946]

@@ObservationofLimits less gullet, and lower pressure per point due to larger contact area... like a "bed of nails"...

[@lobster8009]

@@ObservationofLimits Tooth geometry is everything. Technically more teeth on a blade dont make them cut slower, more teeth just increase the resistance to feed and the load on the motor and as a result slowing down the cut on hand fed machines. On machine fed tools with powerful motors more teeth are a good thing because you can increase the feed and keep cut quality high. I learned traditional carpentry with chisels and handplanes and went on to build furniture with professional carpentry machines. These days i operate large and complex CNC wood production centres.

[@_Yulico_]

Eating the whole pizza slice like that should be considered a war crime!!

[@nelsonfields7679]

the carbide tip found on saw blades are usually a bit wider than the blade to reduce the friction on the body of the blade. If you could have brazed carbide tips on these they would of worked much better.

[@hazaelelenes3966]

Idk why i found it hilarious, how at the beginning of the video he was running while explaining😂

[@therilyncobrin2372]

<a href="#" class="seekto" data-time="46">0:46</a> can 't believe we were cheated out of feet pics smh

[@S0SS0L]

The washing machine clip is from Ed Jones (RIP), AKA Aussie50, one of the OGs of home machine shops and originator of laundry machine destruction videos. He's no longer with us, but the revenue from the views his channel loses when his stuff is freebooted could help his family.

[@pf-scottied0g969]

Always enjoyed Aussie50's videos. Was very sad to hear when he passed. I would have loved to visit him in Australia and destroy some washers and stuff with him.

[@willitrandomblank9849]

can dangerous sawblades cut wood? nah just the safety blades

[@noonecz5201]

Ok if anyone else is going to design their own sawblades, remember that the tooth (the sharp cutting part) has to be the furthest from the center not the back of the tooth.

[@rtr5301]

<a href="#" class="seekto" data-time="1038">17:18</a> "The trapezoid is definitely a violent shape."

[@bigchooch4434]

When someone tries to out-pizza the Hut

[@thedude7726]

Remember when this channel was actually water jet content.

[@Pr0toPoTaT0]

Haha I'm so curious why you started running at us with the saw blades in your hands during the intro

[@ericlathan6178]

i think that was my favorite part of the video. my theory is the cameraman got bored and started walking away so he took chase

[@jamessmith..919]

​@@ericlathan6178 I think that too 😂, shit was hilarious

[@Remidrone]

For some reason,I felt bad for the towel

[@Remidrone]

Conbined rush e on loop with this

[@mathiasddkk]

R.I.P Towely gave his life for good oil spread

[@Lampe2020]

The square had an unfair advantage over the three blades before it because of the bent and hardened teeth!

[@2nd-place]

I noticed on the last test you ran it through a big knot which probably affected performance.

[@sage5296]

The only reason I could think that the bar cut so cleanly would be that there just wasn't blade to cause friction/burning during most of the revolution, since 80% of the blade is missing more or less

[@duskblau486]

im shocked nobody else seemed to notice the very clear joke about the pentagon and the plane

[@jasonkeith2832]

I guess it didn't make too big of an impact.

[@kevincrinklaw7422]

In some sense, literally all of your saw blades are essentially circular saw blades with an extraordinarily low TPI (Teeth-Per-Inch). Some of the shapes didn't actually have a "tooth" that bit into the wood, more like a glancing blow with a dull strike plate at thousands of RPM...

[@Sr.DudeGuy]

I miss when everything got licked.. 😔

[@mc-sp8zr]

I'd say this channel is a shell of its former self (which it is), but the entirety of KZbin is basically that at this point.

[@mrbiglarge8820]

@@mc-sp8zr idk, I kinda like it

[@CFG-A3s]

same

[@CheeseMiser]

​@@mc-sp8zrnew owners.

[@rocketpg_9532]

@@CheeseMiser When did that happen?

[@musicbruise]

Y'all should do this again, but (if you have the patience) angle all of the teeth and see how much better each one does! The preexisting blade cuts would be an interesting idea as well

[@Kurogane-san]

Now you have to use real saw blades but removing shapes of it, we need to know how much you have to remove for it to stop being useful.

[@NeseComedy]

The pentagon jokes were gold

[@OfficialOpinion]

As opposed to saw blades that aren't dangerous.

[@BurgerBoy-zq7uy]

You have a point tho

[@WaterjetChannel]

Bazinga

[@Doceriah]

@@WaterjetChannelthey are surrounded

[@paradiselost9946]

all saw blades are dangerous? these werent "saw blades' by any definition of the word(s?). "waste of perfectly good resources", yes,"waste of time", yes. saw blade? nah.

[@OfficialOpinion]

@paradiselost9946 -- Damn you right they didn't use a series of teeth to gradually cut something whilst being driven by an outside force, ig

[@weles3062]

Жалко не угадал с расположением зубьев на углах, интересно было бы посмотреть если бы они касались дерева остриём. Есть ещё вариант заточки, можно не отгибать зубья в стороны, а заточить напильником под углом в разные стороны.

[@EnormousPurpleGarden]

RIP Towley!

[@lucar.923]

Surely the genius who inventend the saw blade tried all these form before getting the optimal final circular shape, praise to him 😲

[@nonapplicable5499]

RIP Towely, you'll be missed.

[@jeffmccrea9347]

The first blade is a plywood blade. Although it will do it, it wasn't made to cut 2 X 4's. It was made to cut laminated wood without blowing it apart. The teeth are small and close to take small bites. Cutting a 2 X 4 exposes more solid wood to more solid steel, the, (un-toothed blade disk), building more heat through more friction hence, the grain burn. This with more pine sap content in solid wood, there should be no surprise with your results.

[@NoThisIsPatches]

Accurate title: Can something that's specifically designed to cut wood, cut wood? Oh wow they cut wood who would have thought?! 😮

[@jigilub]

There are sawblades with features like some of the ones you cut out, I have especially seen ones like the circle with cutouts, mostly for thicker materials and using multiple blades with different shapes. It blew me away the first time I saw a dado blade

[@FaceIntoKeyboard]

Seeing the setup at <a href="#" class="seekto" data-time="28">00:28</a> I can't watch this kind of stupidity.

[@firefox1118]

I feel like you made this account just to say this…

[@Drift_Potato402]

​@@firefox1118"Joined 14 Sept 2010"

[@theeguy9022]

​@@Drift_Potato402He had a vision 14 years back, that one day it would be his job to prevent a severe injury. But only by having his account made on a specific day would his warning be needed. Truly, what a hero

[@theschuckles2076]

The reason it's circle is so every tooth hits the wood. Any other shape would only hit the tooth that was the furthest out

[@AliHSyed]

Hexagon is the bestagon

[@TaintedCamper]

i tried so hard hot to say it but i totaly failed

[@NostalgiaforInfinity]

There's a reason why nobody uses weird shaped saw blades. The same reason why cars don't use square, triangle or star shaped wheels. For circular motion, the most efficient shape is a circle. Shocking, I know.

[@dignusferox2570]

rip in pieces towelie

[@tonyambrose5679]

It burns because the blade is a uniform thickness this is why bending the teeth helps. Should have started with real saw blades they would have had the carbide tips which are properly shaped and stand slightly proud of the blade thickness. A parallelogram would have been better/safer than the trapezoid.

[@Coolman-w2q]

Heck ya

[@JellyBillgreen]

I’m saying

[@UltimatelyEverything]

Try this again with different shapes but make the blades extremely sharp to see how well they actually do.

[@EduKan20]

i vote for the contest idea, and have a few suggestions disable the dead-man switch let the contestants specify how much weight should be placed on the handle. let the contestants specify, what speed should their blade spins at replace the wood with something more consistant

[@Likes_Dinos]

<a href="#" class="seekto" data-time="276">4:36</a> had me dying 😭😭😭

[@HelloKittyFanMan]

Hahaha, how fitting that the crescent blade broke a crescent shape into the wood; I love it!

[@daniellapain1576]

The bar makes me think that companies could make a pro version of it. Easy storage, uses less material to make and could last a long time if it was hardened steel. It would also make diamond blades cheaper. Some unique ideas could be done with it as well

[@anthonyanglim7147]

The Reason it seemed like 1 side of the blade was doing more work is because, as you lower it only the 'first' side/edge cuts then the following sides pass by without cutting, until it is lowered more, then you see a side cut again.

[@NigelMelanisticSmith]

The audio tracks are insane, the Chinese one matches the intonation perfectly.

[@phlosen7854]

<a href="#" class="seekto" data-time="264">4:24</a> Blades that turn your electric saw into a external combustion saw

[@zweihanderpancakes1855]

Different sides of the saw contacted more because you hand-cut the slots wider, and probably didn't do it perfectly. The holes actually were slightly off-center.

[@TheDivergentDrummer]

Protip. Shim the fence to bring the piece forward on the table about 2 inches. Then you don't have to flip it to finish the cut.

[@ruanulisses6650]

Bro is out there risking his life for our entertainement

[@random832]

i think an interesting shape would be, like, two slightly offset half circles, so that the effective radius from the center gradually increases after it hits the halfway point each time [or any number - you couldn't just do one spiral because it'd be unbalanced, but any other number of outward spiraling 'lobes' could work]

[@StanlyCuppe]

"It'll cut without friction." Saws only work because of friction.

[@easyybreezeyy]

Wearing a face shield ✅ Wearing shorts ✅

[@raggedclawstarcraft6562]

Waterjet channel is everything but a waterjet [:

[@Gamerprodude69]

<a href="#" class="seekto" data-time="1264">21:04</a> broke the cam for a moment

[@moon_krendelsestate]

It’s 25th frame that will imprint word “violence” into your mind

[@scarletevans4474]

<a href="#" class="seekto" data-time="480">8:00</a> "Where do we put this one? Yes, in the square hole!"

[@RockyMountainBear]

This makes me want to cover my monitor with ballistic glass. I like it. 😃

[@HelloKittyFanMan]

"...If you want burning or a cleaner cut"? Uh... you got both of those in the SAME cut!

[@notch8c40]

You should retry this but if you can, make the teeth themselves wider than the blade like real sawblades, I'd assume it'd work better. Nice video though!

[@HelloKittyFanMan]

Oh, so the trapezoid blade's cut actually DID burn, despite your claim otherwise.

[@BlueADHDproto]

Wood shop teacher had a heart attack watching this

[@Xiiki]

I love how he censored his feet because he knows what the internet is like

[@mindaugas700]

Dude is reinventing the wheel