Top 10 Dangerous CNC Crash Fail Compilation

THIS... is exactly why extremely advanced A.I. is very, very, very dangerous. Exciting, yes. Important to adopt, probably. Dangerous? *Extremely*. 😕

As a machinist apprentice I was told, "I'd rather answer your stupid question than fix your stupid mistake." That stuck with me.

Kind of like learning how to bend conduit…. Bender does exactly what you make it do, not necessarily what u want it to.

@@WonderfulMrWolf No question is 'stupid' if it's likely to save people from making a $100, $1000 or $10,000 mistake... such as not 'clearing the path' for an expensive machine head (as it slams into solid steel and snaps off like a twig, lol). NO basic question takes more than $10-$100 of time. Definitely better to be certain than to go broke making avoidable mistakes.

Reminds me of a guy that was always crashing machines. "That's not what I meant for it to do." (Read real dopey) I'd say " maybe you should have explained it better".

Or: Haha do you remember the letter Z? You don’t? Well F U then, now I will shatter the tool

Some operators never heard of the "dry run" function. Just put the end mill in and let her rip!

"Oh east?? I thought you said weast"

So true

14 inches? No 14 thousands. Dumb asf how that works. Learned that the hard way.

Yeah not sure WTF all the praise is in the comments. Pretty weak crash compilation.

Still hurts to watch! This is why most of them still only make $16/hr. lol

And ontop of that almost all of the fails are in a polycarbonate box

Some idiot looking for views.

I have seen others that were way more extreme that these fluff pieces. The biggest expense was all those expensive end mill and maybe some raw material

I see ..

So true the program default speeds rarely work out the box so to speak they need tweaking, i think it depends on what grade of material you have and a cheap one means producing well lower quality parts, always check the speeds and never assume as you are to blame if you dont, if unsure ask setter or supervisor 👍👍👍

When I first started, I would do a dry run with no part or tooling, just to get a visual of my feeds and speeds. I went so far as to put my hold downs or vise in play without a part, using a pencil as my tool, just to make sure my rapids wouldn't conflict with items not shown in a program. Maybe I was a bit gun shy, but I caught a lot of mistakes that both the programmers and I made before, you know, destroying a $2k chunk of Elkonite or crashing a $900 tool. Did you see the one with all the hand tools laying on the bed? Yikes!

yea I always run my programs for the first time at 25% rapid after I double check all my tool paths and I make sure everything is going where its supposed to be going with my finger on the feed hold button.

yeah

Could even see that he had mirrored some of the clips to avoid getting caught.

dont forget the shitty loud intro and outro music , that's the cherry on top

Are you sure?

Basically 100% user error.

no shit dumb ass. machines dont crash. operators do.

Yeah the feed rates they are using in some of these videos are shocking. I like the videos with the bad programming, that’s when you let out that “why did I do that” sigh.

@@arsonarson8364 every time. When it plunges at like 2in/sec and the feed rate is about the same, it hurts to watch but I have to!!! lol

Scary also interesting

some crashes cause mini earthquakes

And bankers from all over the country to write the checks.

I felt the machines pain.

Oh that poor, poor machine head.

Spindles prb not to happy at 3:25 aswell.

@@TheRealMasshole I WOULD AGREE

Why would the axis even need to be that damn strong to apply such a force to break the damn machine? That is certainly more force than any of the cutting forces that machine would ever face.

@@warwolf6862 Dynamic load due to changing of direction during rapid movements is the reason!

the one immediately after that too! Holy crap!!!!! What are these people tinking? lol

As a welder/fabricator I always say "quick or quality, pick one"

QUALITY AT TOP PRIORITY!

@@HighAway but make it damn faster

@@JTKK9 patience is virtue.

@@Dani2wheels Sounds the manufacturing triangle. fast, cheap and good you only get 2. If you want something cheap and fast it wont be good. If you want something good and fast it aint gonna be cheap.

at my place of work, we turn 16" Ar15 barrel blanks between centers. it is really something when the roughing insert cuts the tailstock's live center right where its making contact with the work piece at 1600 rpm

I used to run lathes back in the day. I actually prefer then to the mills.

@@Wulfjager I hear you man. We run AR parts too lol... With lathes it's way scarier because the lathe throws the part. With Mills, they throw the tool. Well, Mills throw parts but not like a lathe. Getting hit by a solid part that's all sharp and half cut is scary as fuck. I've heard stories of guys launching parts almost across the whole shop

@@swickens930 I'm actually now hired at a new shop exclusively on mills. Though I know what you mean when it comes to mills throwing stuff lol. We were running 12x18" sheets of aluminum and the first thing the program does is deck the sheet from .125 to .120 in a vacuum plate. my brainlet coworker stacked the .150 thick aluminum sheets there and ran those. The fly cutter handled it well until it got about halfway through the sheet and launched the thing at the glass; shattered the safety window and managed to ricochet off of the glass and put a dent in the back of the machine. No amount of safety glasses will protect you from _some_ crashes lmao

@@Wulfjager right especially on like, an open lathe lol. Throw something so far and you'll probably be close to being in it's way

@Drew K probably because your making simple parts and all programing done on line. Its so so easy to say 01 instead of.01.

Now that, i'd like to see

@Drew K well i work at a company of about 100 and i would say that not one person has not had a crash of some sort. Good machinists do crash but they learn from that crash. For instance we had a crash at work on machining centre ripping a part out of a vice and it turns out the problem was the material not being 100% flat and it creating a pivot point so i find it impossible to belive your statement. I also have a friend who works at red bull formula 1 team in the uk with some of the most highly skilled men available and all the best new machines and even they crash.

@Drew K or more likely your more deluded.

@Drew K well if your talent pool is anything like your lame arse machines Hass we no your statements are false.

It's not necessarily the program in a lot of cases and sometimes just the tool height not set correctly. It's still solid advice though. Generally you don't need to stop your machine but just turn the rapid down(a lot) before you hit the surface. To go is ok but it's also used during rapid movements. Programmed to or equivalent is better.

Amen to that 👍

Bro the one at 1:50 got me enraged asf like thats a moving part that can take your fingers off. Don't put your hand in there when its running. 💀

Doesn't stop the operator from entering -.3 instead of -.003

You must be a weak as piss employee. Instead of using your brains or balls to man up and fix the problem you waited till it failed putting yourself and others in harms way. Glad I don't work with you.

@@dilligafmofo5921 EXACTLY... people like this Captain WasteOfOxygen guy- far too many.

@@dilligafmofo5921 i completely disagree with your take. He told them about it, he isn’t a certified technician, I’d rather he not touch a machine he knows nothing about and get hurt or wreck the machine. It’s his supervisors fault for not getting it fixed when the problem was brought up. They should have shut the machine down when they found out. Your mentality is what will get people hurt, not someone doing their job and taking the appropriate measures. If anyone got hurt it’s not on the operator, he was told it was fine.

@@knightfall7534 it's more the attitude of passing the buck and then laughing about it. Safety starts with the bloke pushing the buttons on the machine. You need to take responsibility for yourself. I would have tagged the machine out stopped operations on it. No job is worth your life because you wouldn't take appropriate action.

@@dilligafmofo5921 on the other hand the supervisor did tell him to carry on though, as a machine operator he isn’t qualified to say no or know if something is truly wrong or not. If anything that supervisor deserves a talking to because that is no way to treat an employee, clearly he was concerned, and yeah maybe the wording might have made it seem like he didn’t care but really I can see people getting fired for refusing to work like that especially if the supervisor says otherwise. Just another way to think about it, ofc safety starts with the machine operator but ultimately it is the supervisor at fault because he did express his concerns to them and they told him to proceed. I get what you mean though but some people just aren’t qualified to make that call especially if they don’t understand the machines inner workings and are told that it’s normal and to proceed working.

as a 3 year machinist I seen more dangerous machine crash and part holding fail

You mean G01?

@@ricomock2 I was told (example): Z0 surface of the part. Milling dept Z-10; G0 Z150, G0 X(start position) Y(start position), G0 Z2, G1 Z-10, (G1/G3, etc...), G1 Z2, G0 Z150, (from there to tool change ..., etc). That was the easiest and safest way to clear all obstacles (like clamps ..., etc) even when we were milling between or outside the obstacles. However, we soon improved that to just measure the actual height of the obstacles (for example Z30) and added like 20mm in Z. To clear the milled surfaces we started to retract one mm in each direction (X0 Z-10 →X1 Z-9) in G1 and then G0 to Z2. The new machines are that fast in G0 that there is basically no difference if you G0 Z2 or G0 Z50. I mean there is, but you waste more time scratching your balls while changing the workpiece. However, that works very well when you are working three axis. As soon as you start in four or five you have to do all kinds of weird things that you are better of just using what is given from the control system.

@@lifepolicy Okay, so if I understand you correctly, you're talking about keeping Z way up above the part, rapiding to the X/Y approach position, rapiding Z down to a little of the part, and then start feeding down for the cut? That's pretty similar to how I was first taught, and is what I try to teach my students to do. If you're not going to cut something, keeping the spindle way up and out of the way is the safest thing to do. Funny enough I have to do the same thing with the 7 axis Mazak Integrexs that I run, except it's the X axis that needs kept clear. They have dual chucks (headstock and tailstock sides), which are and amazing feature, but if you don't keep X out of the way it's very easy to back the spindle into the tailstock side chuck

@@ricomock2 Correct. I just ignored that procedure when I was on a mill where rapid was annoyingly slow and I had to do more than one part and knew the path was cleared. However, I worked once on a CNC lathe where I produced a few parts, and then the machine decided to do a tool change while the tool was still cutting. So yes sometimes you can do everything right and still have a crash.

It's a similar situation with engines. "How much horsepower can it make?" "It depends: how long do you want it to run?"

ignorance is reckless

What did you leave programming for?

I'm hurt too

most likely they did not set correct safety height because of nuts or other thing in workpiece

@@uknownperson5549 Also could be this one.

Good thing you gave up on living in danger :)

most of the time it is poor programming. and the feed rates all seemed very possible ngl where i work the drills almost shoot into the part just depends on how you write the programm

poor programming is one part, but wtf are this machinists doing?! I worked for a special steel company and every new program you drive only in safety mode for the first part. They go full power without thinking. Often i think by the broken drills and mills they took the wrong lenght for milling.

But the operator has always the power to reduce the feed rates manually. It is also his job to be cautious with the feed rates.

So you are saying it's not?

Those guys have another definition for dangerous😂

@@ssg5598 I’m a CNC Turner myself and until you’ve had a decent size steel billet come flying out your jaws at over 1k rpm you don’t know what a heart attack is🤣. Abs as long as the doors were closed none of these could really harm anyone. Just fuck up the tool and maybe knock the alignment out, or possible shag the spindle

It's just a clickbaity stolen clips flipping them left right vid

Most of these have the potential to be very dangerous if someone is around while the machine is at work

Must be careful though, some materials and cutter combos need to be run without coolant. Intermittent cold coolant on a cut can lead to thermal shock and premature tool wear, as well as uneven surfacing. Cast iron comes to mind.

@@Nathiuz interesting. Thank you for the knowledge. I’m used to materials such as A2, S7, D2, 8620, 4140 etc.

Nah.... I mean beginners that stuff, but so do the guys who have been machining for a long time. All it takes is one decimal or forgetting one offset, and then confidence telling you that everything is good to go

@@ricomock2 your right its is so so easy to miss a decimal point.

Complètement d accord toujours faire attention pour la 1ere pièce aux approche outils et d anticiper les déplacements dans le programme en cours

Good luck. I have a 3d printer, it's already a learning curve, but this is something else.

@@pierrex3226 Somewhat familiar with computer code. I've also thought about 3D printers. If only to help out my family members that want one.

To save you time and money, maybe lookinto creality ender 5 printing at .6mm.

If you maintain your machine properly, absolutely 0% of it is machine error. lol I've never had a machine breakdown, but I've definitely made my share of F'ups

The machine does exactly what YOU as in the operator tell it to do, so yes the machine is rarely if ever at fault

Remember, s rocket launch failure occurred a few years back because of a data mixup between imperial & metric , big money burned up.

Honestly, how quickly would they fire you over mistakes like this? I don't know how the field works.

@@BuzzingGoober probably not that quick but if you did it again then I bet you're out the door

@@BuzzingGoober Depends who loses an eye or hand I suppose :)

You mean the "Oh Shit" button.

As we say at work "white knuckling the chicken switch.

@@triumphdave2449 😂

Right! A large VTL chucking something that wasn't clamped securely, makes everything in the video look like a joke. Or large OD grinders, 54in×4in wheels spinning at 700rpm, is like a grenade going off if the wheel lets go (I've had the honor of seeing the results of a bad run of large grinding wheels. First time operator error was assumed, second time the mounting of the wheel was thoroughly monitored and documented but still let go upon first time being spun up. The remaining 2 wheels from the batch were sent back, and the manufacturer admitted that there was a bonding issue)

That would be a monumental pain in the ass to source

@@ryanhendricks1027 , lol so true. I guess my point was that I don't think the average person watching this understands the costs for some of these mistakes. Cheers

Came in to say this. Step one should always be "turn off the machine". Thank you Mr. Overstreet!

Sometimes they run air, it blows the chips away and cools the cutter.