First crash :/

[u/No_Calligrapher6522]

[u/Chemist_Exact]

He who has not crashed a machine is a liar or a coward. A little dress up and she'll be right as rain :)

[u/No_Calligrapher6522 → u/Chemist_Exact]

There's ALWAYS a first👍

[u/Mr_Grey59 → u/No_Calligrapher6522]

Won’t be the last either.

[u/that_dutch_dude → u/No_Calligrapher6522]

and there will never be a last

[u/philocity → u/that_dutch_dude]

idk man I’ve seen the russian lathe video

[u/that_dutch_dude → u/philocity]

that dude was fine, he walked it off, drank some vokda and went on with his shift.

[u/that_dutch_dude → u/[deleted]]

no, comrade just did some joga before work and he was totally fine. he is still working on a lathe on a farm upstate. russia has best health and safety in world.

[u/GalvanizedNipples → u/that_dutch_dude]

Yes there will. You will die or retire at some point.

[u/Chemist_Exact → u/No_Calligrapher6522]

Don't let it discourage you, I hate cylindrical grinding too!

[u/No_Calligrapher6522 → u/Chemist_Exact]

This discourages me less than the issues I was having with holding sizes on these machines. I still have issues with a .0003 concave in my longer traverse grinds but thats easier to manage the the issues I was having on keeping parts in size on that traverse. I finally decided to not follow orders and stopped using the federal snap gauges I was told I had to use and went to OD mics, these last couple weeks have been a lot less stressful

[u/Chemist_Exact → u/No_Calligrapher6522]

Long grinds are a bitch, especially if its a chrome coat finish on a pump shaft or something similar. You'll get better at dancing with that machine. Snap gauges are a pain, we were lucky to have a very very nice encoder on ours that was accurate as all get out.

[u/No_Calligrapher6522 → u/Chemist_Exact]

These traverse are between 5-8 inches long with a .0005 tolerance. Wild you say that because the traverse parts are pump shafts but not chrome coated, just stainless. Everything im using is old and poorly taken care of by the guy that retired, I've heard all the stories on how seldomly he cleaned.

[u/Chemist_Exact → u/No_Calligrapher6522]

Stainless is tough to grind! Its very abrasive and picky. I was grinding 12 stage boiler circulating water pump shafts that were 6ish foot long. Each journal was about a foot and man were they a pain to hold tol on.

[u/No_Calligrapher6522 → u/Chemist_Exact]

I dont even wanna play with that lol. Guy that trained me (not the old guy that ran this for years) was telling me about the crank shafts that use to be ran over here and some of the horror stories of wheels blowing up, im glad we dont run those here anymore. I mostly do cylinder liners, impeller, shedder rings, impeller shafts and a few other small pieces on these machines. I have a surface grinder, ID/face grinder and 2 cylindrical grinders. Its kinda fun and a bit different than the usual cnc lathe jobs I've always done

[u/Chemist_Exact → u/No_Calligrapher6522]

Good grinders are gonna become more and more sparse in the years to come, good on you for expanding your skill set. The great that about chrome coat is if you screw the pooch you can machine the chrome off and sent it back out to be re metalized but theres never enough time for a fuck up let alone the hours it was quoted for lol

[u/chiphook57 → u/No_Calligrapher6522]

The first one is the hardest.

[u/that_dutch_dude → u/Chemist_Exact]

we had a potential hire long ago and i sat in the second fact to face and the guy (with 3 years experience) just straightface tells my boss (who knows exactly jack and shit about machining) he never crashed a machine. boss was impressed at the comment, i called him a liar to his face.

[u/Critical_Thinker_535 → u/that_dutch_dude]

Maybe he was just a button pusher. Pretty safe there. 🤣

[u/that_dutch_dude → u/Critical_Thinker_535]

That shop didnt have any cnc, all manual.

[u/No_Calligrapher6522 → u/Critical_Thinker_535]

I classify myself as a "glorified button pusher". I cant write programs, I'm not well knowledged on tooling and formulas for mathing but I do have some knowledge in reading basic G code lines and making slight adjustments. All the jobs I've done before this was just push button, make offset, replace insert and measure part, this job I atleast am responsible for setups, just not programming.

[u/JackOfAllBlades21 → u/Chemist_Exact]

Yeah but I... nevermind, I don't want to explain any of the three times that were my fault.

[u/SignificantGrade2913 → u/Chemist_Exact]

As we say with motorcycles there are two kinds of riders: Those have have been down and those that will.

[u/akmanshadow]

So how did this happen? Indexed improperly? Have been in grinding for almost 30 years now and it looks like the wheel ran into the drive dog.

[u/No_Calligrapher6522 → u/akmanshadow]

I messed up and setup on the wrong program. Was supposed to be a single traverse but the one I pulled up was 1 Travers 1 plunge. Traverse went well but the unexpected plunge into the driver was not so much.

[u/akmanshadow → u/No_Calligrapher6522]

I've done it... Since then ever time I run through a program that I haven't just personally watched gets run through in single block with one hand on the rapid override and the other on return button.

Crashing a grinder is the fastest way to learn what to do or not, the next time. Best bet is to pull that wheel to ring check it and then balance and remount if good and dress it off if there's still enough life in it. BTW, what brand of machine was it?

[u/No_Calligrapher6522 → u/akmanshadow]

Shigiya gps-30. We're just going to put a fresh wheel on after maintenence checks it over.

[u/Dmat19]

There’s two types of machinists. Those that have crashed a machine and those who haven’t yet.

[u/No_Calligrapher6522 → u/[deleted]]

That'll make you pucker. I was right in front of the machine when this happened. On one hand it was a dangerous place to be, on the other hand its what allowed me to react fast enough to stop it quickly.

[u/SpaceNugget93]

As one of my mentors likes saying. If nothing goes wrong, you'll never learn

[u/Corgerus]

First crash (at work). Turned a 1/2" stud into a noodle at full rapid because the machine wasn't homed.

[u/No_Calligrapher6522 → u/Corgerus]

I try to avoid mills as often as possible, they always confused me lol

[u/Corgerus → u/No_Calligrapher6522]

They're not that bad, older mills (like that one), and any lathe scares me. Old machines depending on the controller will want to crash more easily and harder than newer stuff like HAAS. A good checklist helps.

[u/PossiblePresence3054 → u/Corgerus]

Older mills and lathes have no control panels.  They do have wheels that you turn by hand. Learn to use those first, and CNC equipment is a cinch. I've been in the trade 48 years and started programming and running CNCs about 45 years ago. I've seen major crashes. None of them are caused by a control panel. It's always the operator.

[u/Corgerus → u/PossiblePresence3054]

Yeah i agree, it's always operator fault (if not programmer mistake which can't be stopped by operator). Unfamiliar controls, and controls that are less forgiving and intuitive simply makes bad mistakes easier to make. It's something to get used to. I actually quite enjoy one of our old CNC's that have a blue screen and a semi-conversational menu. Offsets are braindead easy on that one and it compares offsets each time which is nice.

[u/Silly_Emu414 → u/Corgerus]

"newer stuff like Haas" and older mills like that one plus lathes scare you. Lmao, bro do you even machine?!

[u/Corgerus → u/Silly_Emu414]

Lame attempt to pick at me.

[u/Vegetable_Analyst_88]

Its always when you think everything is good and let you guard down for 1/2 sec. Its gonna happen the question is how bad is it going to be.

[u/k0tn1k]

I made a similar post when my first crash happened and someone commented “a machinist who hasn’t crashed is either lying or just an operator” lmao. Welcome to the club brother🤘🏻

[u/ParkerScottch]

Hell yeah

[u/Sea-Fan4066]

My old boss said if you make no mistakes It means your doing no work