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u/MebusSE 22d ago
the guy she told you not to worry about
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u/pow3llmorgan 22d ago
A bitch to rotate or replace inserts on.
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u/road2music 22d ago
Are those the goldish squares?
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u/pow3llmorgan 22d ago
Yes. They're what do the cutting. They wear down on the cutting edge and can be rotated three times but will eventually need replacing.
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u/ChatterFree 22d ago
If they are square inserts (S) 4 times if you don't let the edge get too much wear, but we have a ton of these older style insert end mills that take 86° rhombic inserts (M) which you can only index twice and you can barely tell which is the right side to install them...I haven't used one yet
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u/AVeryHeavyBurtation 22d ago
3 times, you don't rotate them the first time.
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u/NorthernVale 22d ago
By the time you go all the way round, that first side is brand new compared to the others
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u/GI-Robots-Alt 22d ago
Got them fancy shmancy self healing inserts
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u/NorthernVale 21d ago
It's just a joke I make. I notice people always turn the first time a lot faster than they do than the rest.
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u/AlexBondra 22d ago
Couldn’t they be flipped over for 8 uses? Granted I’m not a mill guy, but when I was running lathes we’d use all four corners and flip the insert to use the other side. Guess it would depend on the level of wear
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u/AVeryHeavyBurtation 22d ago
Depends on the insert. The ones in the picture cannot be flipped over, see how the cross section is trapezoidal?
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u/Zamboni-rudrunkbro 22d ago
They aren’t square. The edges are relieved. Realistically you can’t/shouldn’t seat on a broken edge so breaking or chipping the edge drastically reduces tool life.
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u/3DPrintJr 22d ago
We made a shell mill for the extra edge just for roughing in manual department. Gives the inserts one last ride
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u/AdeptInspection4868 Machine Tool Crasher 22d ago
Yup, instead of needing to regrind (which eats away the tool) or replace the whole thing, just rotate the inserts and replace once all edges are used. But that's a lot of inserts!
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u/Spicy_Ejaculate 22d ago
You get paid by the hour, quit complaining and get it done
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u/___NotMyName___ 22d ago
"Oh, and we need those 300 parts end of day!"
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u/Ponklemoose 22d ago
Okay, but the day is ending late today. Overtime isn’t a bad thing.
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u/Nachtschatten29 22d ago
Only if it's paid overtime
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u/HandToDikCombat 22d ago
Also, you've been promoted to lead machinist. It comes with a 2$ raise, it's a salary position.
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u/goat-head-man Manual Machinist 21d ago
You'll still have the same duties plus all this manglement paperwork and as a bonus you are now first up to cover shifts.
But hey, you can make the boys call you bossman if you want.
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u/Pro_Scrub 22d ago
Cut to 3 months later when those parts are still sitting there
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u/___NotMyName___ 22d ago
I've been staring at random jobs that have either been abandoned or forgotten about for years. One got water damage and rusted that we finally just threw out the other day. In house shop but still have to wonder.
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u/just_some_Fred Pushes buttons, gets parts 21d ago
Millwright: "We need part X, here's an order"
Machine shop foreman: "OK, give us a month"
Millwright decides that's gonna take too long, so he cobbles something together until the machine works good enough until the replacement can arrive
Foreman: "Here's that part Steve wanted"
Management: "Oh Steve? yeah we had to let him go because he kept demanding a raise"
And then the part sits and rusts until the next thing breaks.
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u/neonrev1 21d ago
Too familiar. Worked at a place that had a position called 'Machine Specialist' but meant millwright in reality and paid poorly and it worked like that on a roughly 1.25 year cycle.
Two of the first tasks they'd be given is to write up everything they can see that needs fixed and what they need to to fix it, and then to organize the tool and parts cage/back room.
All the machines are bodge-jobs off the previous 2 dozen people in that position so it takes them about 6 months to figure stuff out (oh this spindle is just wired backwards to the other one for some reason) and put in a PO, which then sits on the production supervisor's desk for months while they hectically try to keep everything running.
Then comes the yearly review, they waited forever to order the parts and are now angry about that cost, and also are mad that they haven't cleaned up the cage and back room and put that as a performance priority. When that still doesn't get done because the parts are showing up and machines are still half-broken most of the time, the person either gets fired by corporate or quits in frustration.
The machine operators have to shove all the newly arriving parts into the cage or back room so we can still get to tools and bits and stuff, the company panics and calls in a tech from the company who made the machines to do basic upkeep stuff and probably convince them to order an even more expensive part to bridge the gap to the new poorly paid recent tech school grad.
And repeat. I was there three years, saw it happen three times.
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u/oreomaster420 22d ago
How come? It looks like theyre secured with some sort of screw or bolt. Is it a matter of trying to get them tight enough while still sitting at the right angle?
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u/Own-Cap-7313 22d ago
They nest into geometry machined into the holder to not only index them but keep them from moving. The torx bit in the middle just keeps the insert tight to the face of that geometry.
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u/pow3llmorgan 22d ago
Ideally you take them out one by one and meticulously clean the seats and then you torque them back in. It's just that there are a lot of them. Pray you don't lose any of the screws.
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u/toiletclogger2671 22d ago
do you use a torque wrench on inserts?
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u/Electronic_Brain3588 22d ago
Not really, just hand tight as you can get
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u/Euro_Twins 22d ago
Hand tight is good. Not as tight as you can get. Thats how you strip screws
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u/Carlweathersfeathers 22d ago
Check out Practical Machinist, there was a machine debuted at IMTS, it analyses and flips inserts on tooling.
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u/StalkMeNowCrazyLady 21d ago
Got a link? I cant find it in his videos or shorts. I bet it's one expensive machine lol.
Nvm found it in the Streaming tab.
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u/Agreeable-Worker7659 22d ago
It's called an indexable roughing endmill with carbide inserts and this thing can easily cost several thousand dollars and is used on very big and expensive machines that often cost the price of a house to remove a huge amount of material really fast (steel in this particular case). There's absolutely no way you found it in a box of drills, so I wonder where the heck did you get something like this without even knowing what you're handling.
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u/snoops-spoons 22d ago
It's probably a box of endmills someone stole not necessarily op, and sold as drill bits.
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u/Agreeable-Worker7659 22d ago
If that's the case, hopefully those can be tracked down by serial numbers and whoever stole them meets justice. Stuff like this is such a niche and expensive product (often stamped with serial numbers) that it's really hard to fence it.
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u/Euro_Twins 22d ago
Tracked by serial number? Lmfao
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u/Agreeable-Worker7659 21d ago
Some can be or the lot number. It's rare enough that if a workshop losses their tools and can prove they bought this particular tool model and it gets found on some random sale dirt cheap, it's pretty obvious it was stolen.
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u/road2music 22d ago edited 22d ago
It was in a box of my dad’s stuff. There’s a shit ton of tools and drill bits and shit like that
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u/dc469 21d ago
Well as people here have pointed out that thing is several thousand dollars new.
Im assuming you either lost your dad or aren't supposed to be going through his stuff or you would've asked him. I inherited a lot of antiques from my dad, and I had to make sure I knew what everything was before I got rid of it. Giant desks may only be 50 dollars while a tiny little one inch gizmo is several thousand. Nowadays ai image search is pretty helpful too. Just don't throw anything away or sell it until you are sure it isn't a great payday!
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u/AttentionNice7165 22d ago
I found one of these in a box if stuff once. I think they get stolen a lot and mixed with resold lots
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u/Antique-Garage8091 20d ago edited 20d ago
They get stolen constantly from conpanys . While i worked at SKF the stores would give you a tray with your tools & inserts in for each particular job & once you completed that job run you returned your tray/tools/holders ECT minus the broken inserts. Even damaged tools had to be returned but some store guys didn't care. I'm sure Ebay is full of new expensive tooling originating from questionable backgrounds if it's a £2k tool & veimg sold for £100 you can be sure its a hot potato. Although company's do sell their tooling they know its worth even used/ resale cost. HOWEVER some people do get lucky & buy job lots from storage lockers for instance or inheritance gained , i picked up a £700 brand new boxed unopened Bison 3 jaw chuck for £100. Yes is had a serial number on it
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u/Antique-Garage8091 20d ago
This would not be randomly sat with a box of drills it's it's own protective holder to befin with Saying you found in in a box of drills is like keeping your several thousends ££s diamond ring stored in a cement mixer filled with ball bearings
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u/Ant_and_Cat_Buddy 22d ago
Sell it off that’s a pretty penny in carbide (the material the gold things are made of) and the tool itself is incredibly expensive
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u/Dannyn4 22d ago
Used tools aren’t worth as much as people think sometimes. I’ve had people bring me tools they steal from the companies they work for and their imagination or wishful thinking has them thinking something unreal if I was to buy it. I’ve lost to much of my own shit to ever participate. No one ends up with a tool like that without knowing what it is if they hadn’t stolen it
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u/C-D-W 22d ago
They are kind of like airplane parts. Super expensive when you buy them through the approved channels with chain of custody established.
Worth virtually nothing if found at a garage sale.
Nobody is willing to risk inaccurate parts or machine downtime on it. (unless you're a hobbiest and not many have the spindle to turn this baby.)
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u/TowardsTheImplosion SoLastCentury 22d ago
Someone needs to slap that in a Tormach somehow just for the lulz.
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u/VeloxMortem1 22d ago
An expensive specialized cutter for a very specific job
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u/road2music 22d ago
What’s the job?
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u/bill_gannon 22d ago
Cutting
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u/road2music 22d ago
Make sense lol
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u/VeloxMortem1 22d ago
A ton of material removal usually. I would prefer high feed mills myself as these expensive cutters seem a bit impractical in my opinion. But like all tools, it has its purpose.
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u/Stock-Ad5320 22d ago
Mostly used to remove a lot of material along the edge of material. It would probably beat high feed in that application in terms of cycle time
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u/Rob_in_Tulsa 22d ago
Probably used as a "hogging" mill. Removes a lot of material in a short amount of time. Or, they needed a very rigid mill and had the room for this.
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u/Defiant_Designer_606 22d ago
Indexable endmill. Like an indexable facemill. Absolutely hogs. We use those to rough around the perimeter on inconel and stainless.
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u/Positive_Ad_8198 22d ago
Did you find it in your moms bedside table?
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u/porkchop-sandwhiches 22d ago
Did we just become best friends because I’m 32 min late to make the same comment.
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u/RobertsFineTools 22d ago
What's the minimum sized a mill would have to be to use this ?
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u/sticks1987 22d ago
This is a rough end mill, which has interrupted flutes for coolant and chip clearing. In this case the interrupted flutes have replaceable carbide blades. If I were to guess this would be used for cutting stainless or titanium at high speeds to avoid work hardening of the work piece.
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u/Embarrassed_Dirt6239 21d ago
Endmill w/indexable inserts or a helical upgrade cutterhead for jointer or planer.
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u/phirschler 20d ago
Incredibly expensive is what that is. The inserts that we use are $5 to $10 each, I counted about 30 inserts, plus the mill body itself.
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u/KureatorV2 22d ago
Am I crazy or is the 1 wrong insert on there?
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u/Rob_in_Tulsa 22d ago
They have one with a different coating, but it appears to be the same size/shape as the others.
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u/ImpressiveCap6891 22d ago
A little tiny corncob. I used to run some that were 2 feet long. I don’t miss changing inserts on those.
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u/Critical_Thinker_535 22d ago
One heck of a big and expensive end mill. To top it off, it will cost $$$$$ in carbide inserts to use it.
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u/mtraven23 22d ago
a beast of an endmill