Machine Inconel. 718 V A286 V k500 v Nimonic it's easy 😓😉

[@dazaspc]

I am always impressed on how well the tip screws hold up against the hard core chatter. That groaning chatter reminds me of a job I did as an apprentice machining a manganese steel casting. It was 4.5 meter diameter and the molder hadn't properly patched up their foot prints in the sand so I had to machine off these 5 lumps on the face. In an old Tangram with a mobile bed and the head stock fixed to the ground. It had an 8 foot swing. The lathe had a torque converter as part of the drive train but wouldn't go any lower than 3 rpm machine speed without slipping to much and you would raise the RPM in between contact points to speed up the process. Each high spot this casting would groan/ring when machined but there was no other way. I had car tires, blocks of wood and rubber between it and that face plate to try and quieten it down and it helped but was still terrible. I had ear plugs, muffs a beanie and a scarf wrapped around my head but That noise reminded me of just how hard the chatter was. There was no other way though as without loading it the tool/job just deflected.

[@grumpyg9350]

Mr Wilks. What a fantastic job you do, and with such ease. I really enjoy the sounds from the cutting, and your commentary. Thanks for making the videos! 👍😷🍻

[@Watchyn_Yarwood]

Sent here by bcbloc02. Super interesting and very enjoyable!d I'm not a machinist but I love to watch people create. I just wish I could understand you. I get maybe 20%. I tried closed captioning! LOL! If you want a good laugh, turn on CC and let you tube try to translate!!

[@BluesDoctor]

Cheers Dave. I learn a little something from every video you produce. Not that I will have a chance to use any of these skills. I truly enjoy every minute of it with your comments. Stay healthy my friend.

[@captcarlos]

Thank you Dave, A good selection of difficult metals there to test technique. Your experience makes it look easy.. Hope you are enjoying your workplace. I'm sure they are enjoying your competence.

[@heliarcweldandmachine]

everyone blows on about Abom, this guy deserves as many subs as him, this stuff aint easy. great work

[@ValExperimenter]

I'll have to try machining inconel one day. Last week I had to machine the teeth off a large bevel drive pinion, I put the part in the furnace to soften the hard skin. Trying to machine this with CNMG inserts in an MCLNR holder was a nightmare, the chatter could be felt through the floor, I was about to give up and put it back in the furnace at a higher temperature when I thought about trying SNMG inserts in 15 degree holder like I had seen you use in other videos, it was like night and day, the vibration reduced considerably and it was possible to increase the depth of cut by 50% thanks for sharing that.

[@sma11]

If you're having difficulty milling trouble materials, try that as well, a tool that presents itself to the material at 45deg rather than 90deg. Milling weld build up on a36 etc. I use then when I can on the low hp mills because they cut so much smoother.

[@bcbloc02]

I would be saving those inconel chips and casting my own turbine wheels. :-)

[@davidb6576]

Glad you're still making videos, David...

[@johnmunday4831]

Dave, great stuff.Back in early 80's I was given 4 inconel rough round forgings .I first had to center drill the approximate center at both ends, did that on the mill strapped to the side of the table with huge V block and swinging the ram over to pick up scribe point.Big carbide center drill was needed. Then I faced the rough end flat to nest against 4 jaw.Same other end.Took me whole day to knock the forge finish down to a complete (not finished) dia.Went through inserts at least one box of Sandvik per forging.Miserable job, poor More Seki.

[@stuarth43]

used a Mori Seiki , lovely machine, affordable when yen was low, now they fetch moonbeams used, like DSG

[@markwatson9816]

Another viewer sent by bcbloc02. Thanks for showing the cutting end of the trepanning tool. Never seen one before and seeing it really helped me understand how it works. And you're really showing the true meaning of "flood coolant" - it looks like you coolant supply hoses must be firehose sized!

[@enriquedemaria5071]

The Best workshop.el mejor video de la semana.para un duro otro más duro .I love this turn the machíne it's powerfull. Saludos David from León México.

[@StreuB1]

The master and his craft. Excellent work Dave, showing the tricks of the trade and how to get done what others cannot.

[@jincym2718]

Inconel 618 king of metals and ur the king of machinist 👍

[@maxbray9124]

David can do more with a file than most KZbin self proclaimed machinist can do with a whole shop, very impressive, this guy has skills, good to see someone other than a hobby people that try to copy each other, monkey see monkey do

[@capin232]

Excellent video as usual, and longer to boot. Keep up the great job brother! Thanks again

[@simonmcneilly55]

Inconel, 718, double age hardened . And then he does a 2nd in just for fun.....

[@grumpyg9350]

Had to watch again 4:13 best sound!👍👍👍👍👍👍👍👏🏻👏🏻🍻

[@georgestolz4705]

Hi David. Brian Block sent me to your channel and I really like watching you work those big machines. My Dad was a machinist for 40 years doing aircraft production work. I am sad you had to give up your shop. Best wishes for the future. Best regards.

[@robertsawyer1464]

Well David best entertainment on Saturday TV. Thanks for another great video. 👍🔧🔨

[@scania357]

Just wouldn’t be Saturday without David and some inconel. Superb job mate.

[@hmw-ms3tx]

Great video Dave. Lots of brutal material. The Sandvik rep must love coming to the shop you work in. Keep it up, Ken

[@ktmtooling]

It's not easy, but you make the job easy. great..

[@catabaticanabatic3800]

Your skill is immense. It's a lucky firm that has you working for them.

[@ChrisB257]

Can but imagine the insert temperatures even with all that coolant! Amazing what they take. Seems as always, speeds and feeds super critical. Don't suppose you ever have the luxury of something like 41-40 or even 10-18! Still find it incredible what you achieve Dave and also ponder on both material costs and the actual job cost - has to be big money. Always intrigued wondering where the finished work goes though maybe you have mentioned something in the past. Hope you say Hi to Mr Smith soon :) ATB.

[@pearcemachineshop5200]

Impressive work Dave, just goes to show it doesn’t matter how good the engine is, it still needs a great driver. Al.

[@DudleyToolwright]

That's some seriously extreme work. I'm amazed.

[@brianmurphy8790]

Attempting to machine cobalt alloys makes 718 seem like a walk in the park. I used to be a machinist in a metallurgical testing lab making test pieces - (tensile, charpy, izod, bend) - lathe and mill work. They're weren't big items but the test samples often came in wonky rectangles butchered from the end of a cast - or sometimes as a big lump that had to go in the bandsaw. Honestly, a wonky rectangle of 718 was easer to turn than a straight bar of cobalt alloy.

[@ktmtooling]

Well done, David. this is amazing with this massive machine.

[@derekhead5574]

Had to finish some shafts in 718,they had been in a furnace for almost 12 months at 750°C they were tough.The parts were for turbine blades for a gas turbine for Alstom

[@alasdairhamilton1574]

12:50 why hardened before machining? 👍👍🏴󠁧󠁢󠁳󠁣󠁴󠁿🍺

[@markfryer9880]

I am not a machinist but as tradesman I would assume that it is hardened before machining so that the resulting pipe retains it's concentric shape and tolerance, whereas hardening after machining could alter the shape.

[@dazaspc]

@@markfryer9880 Spot on. Stress relieve and harden.

[@markfryer9880]

Another place that you can see trepanning in action is the concrete coring vans that you see going to building sites around cities. They generally start with core drill bits around 45 or 50 mm in diameter and go up from there in length and diameter. They don't use tips but rather have segmented edges coated with industrial diamonds.

[@peterfitzpatrick7032]

And they can cut through rebar too.. 😎👍 Just keep the water goin in or they jam... aaaand yer fucked ! 🙄😂😂

[@paulperrin2152]

When you have to change tips part way through a cut , were do you start the cut from with the nee tips?

[@markfryer9880]

David, with your comment about trepanning, I thought of another reason for using the technology in addition to the value of the core being retained there is the horsepower to consider. Cutting as you are only requires a very small percentage of the horsepower that would be required to drill the sizes of holes that you drill if you were able to get drill bits in the sizes and lengths that you require. One can only imagine with horror the staggering horsepower required as well as the torsional stresses that the lathe bed and chuck would need to resist.

[@Gottenhimfella]

Not to mention a constant stream of sweating boys with wheelbarrows to carry away the chips.

[@Brrraaack]

@@Gottenhimfella best comment on youtube!

[@stuarth43]

but you would not but small drill then bore?, given the price of steel trepanning is the only way

[@chrisyboy666]

What do you do with the slugs ?

[@izalman]

Facinating stuff... do you ever find out what your finished job gets built into?. All these exotic materials of such a size must go into something special..

[@stevenwagstaffe6644]

All interesting stuff dave

[@adrianbower1740]

Gday mate.. man that looks like fun.. I have spent some time behind a lathe in earlier times and I know how boring it can be sometimes... Geez I miss it... I’m really interested in the different metals you machine to.. when I was machining sandvik was my choice 👍🏾👍🏾to.. cheers mate

[@kunjikorans]

Do you reuse the cutting oil ?

[@williebulletman5217]

I have a question for you when you’re showing these cutting bits being worn out can you re-grind them to sharpen them or do you just throw them away after I’m not a machinist so that’s why I’m asking this question

[@emilgabor88]

Hi. If you not set corect the trepanning tool. To much up/down/left/wright, dose it make a taperd bore, or an exentric bore if you go throu the part, whithou fliping?

[@sma11]

Tapered bore. Things have to go very, very wrong to get concentricity issues.

[@kevinstrachan4442]

Do you grind a new edge on the big carbide inserts or weigh them in for scrap?

[@Laura-wc5xt]

David, any idea on what that bar of Inconel cost? Those are some nice cores left over for sure.....I wish you could let us know what they will be used for....just wondering, do you separate chips for recycle to get a better price? best wishes, Paul form Florida

[@Lesfac]

Your inside and outside micrometers would be interesting to see for the variety of large diameters you deal with.

[@FrBobLaceySD]

I figured 315 minutes to do 50 inches at .006/rev and 26 rpm. Is that somewhat correct? I realize theres downtime for insert changes...

[@chrisb4009]

You seem to do a lot of jobs with exotic metals. What sort of allocations are these actually for?

[@matttradie1341]

What were they using that for after it leaves your machine?

[@numheed]

Hi, what kind of jobs are they used in

[@karlhrdylicka]

Hi,Dave thanks for longer video. Lot of questions of interest in comments , do hope you can find time to answer some of them. Hows the heart breaking clear out of your workshop going ?.

[@onehot57]

Does that rope actually hole the steady rest in place?

[@aubreyaub]

Nimonic, troubles, feed/speed....would a good "Ammeter" telling you machine load, be helpfull, understanding free cutting...blunt tools, troubles or good sailing...?..?...!

[@nmopzzz]

How many pounds do those inserts cost?

[@davidb6576]

It's more a matter of how many Pounds do they make! ;)

[@kisspeteristvan]

I'm not sure what size he uses , but Sandvik WCMX 08 04 12 T-53 1020 has a list price of 14.50 euros

[@machineworld1873]

Nice

[@paulperrin2152]

When using boring bars and external cutting tools which is most dangerous a tool above centre height or a tool below centre height??,thought iwould ask the master

[@Brrraaack]

OD Tool: tool never over center height. Boring Bar: tool never under center height. Tool deflection should be considered!

[@evgenyivakhnik7344]

Awesome! Can you show that impressive drill?

[@metzenw86]

It blows my mind the insert life that you get. I cut a lot of small Inconel 625 and 718 castings. Your 2 inserts remove more material then I can get with 50 inserts. It's all about rigidity when cutting Inconel. All my castings are thin wall.

[@curtisvonepp4335]

Educational videos David can you move the mike closer to your face for better hereing your voice 🙉🙊 .

[@simexi]

Hi, I'm having probs with aisi329. Any suggestions to make inserts last more?

[@shawngoldsberry747]

Any tips on drilling and tapping Astralloy-V

[@sma11]

Iscar makes incredible insert drills and Thread milling is the king of tapping holes. Cheers

[@srednadahlberg]

Are all these blanks for gas turbines?

[@elanman608]

Am I right in thinking the other advantage of treppanning is speed it's got to be at least twice as fast as drilling and rough boring. Always enjoy your vids espescially the toolmaking and tool repair ones.

[@pacificcoastpiper3949]

You have a cool accent machinist, what part of 🇬🇧 is it from?

[@adrianjackman9422]

I love watching this stuff coming from an engineering background but working in the other end of the scale size wise. One thing I wonder if you have a major barge up which must happen from time to time who pays for the material, you or the customer?

[@stuarth43]

sometimes experts never stuff up, picking David is in that bracket, as a builder of yachts, you start a cut on a 3000 dollar alu plate, makes you sure before you cut

[@adrianjackman9422]

@@stuarth43 Really, I don't know one person that has never made a mistake, however much of an expert they are. Add into that engineering wise, tip malfunction, power cuts, swarf jams etc and it is bound to happen sooner or later.

[@markfryer9880]

For very large trepanning, have a good look at the large drilling machines drilling foundation pile holes for reinforced concrete columns to be poured in the holes.

[@binaryguru]

What are these part used for?

[@matthewroepke4644]

What’s the HP of the lathe? Cheers from Chicago!

[@aubreyaub]

American Horses, English Horses, Spanish Horses, Australian Horses. Sorry mate, haven't had me tablets yet. I did ask him, on one of his own machines, think he said 32HP., definitely need some grunt.

[@jthewelshwarlord6331]

How much does the company spend on inserts for these trepanning jobs?

[@rickybulao5112]

Mesin bubut terbaik 👍

[@mikeram2000]

grandes mecanizados...

[@lorenwilson8128]

Anneal the A286, machine it, heat treat it, and then run a final pass in case it moved a bit during the heat treat.

[@kwasg3]

nice vid but two things: You should just do a voice over, zero chance of understanding what you are saying over the machine noise, esp with that thick accent :). The other thing I keep meaning to ask, what typically generates the demand for this service? There must be quite a demand, because I even get youtube ads selling trapanning service once in awhile.

[@kunjikorans]

David, you either need a better mic system or you need to add your voice after making the video. The volume of the working machine is more than your voice

[@jincym2718]

OMG how many $$$$$$ worth

[@philliplopez8745]

Who the hell are your customers and what the hell do they use those for ?

[@Laura-wc5xt]

Inconel...The Space Shuttle used four Inconel studs to secure the solid rocket boosters to the launch platform, eight total studs supported the entire weight of the ready to fly Shuttle system. Eight frangible nuts are encased on the outside of the solid rocket boosters, at launch explosives separated the nuts releasing the Shuttle from its launch platform.

[@tymekgoral4219]

Inconel k500? Think its Monel k500 mate

[@aubreyaub]

Why trepanning. Yes, prices are good. I just bought a hunk of 4140, 63mm, by 2m long., A$170.00

[@nikolaiownz]

6:45

[@nikolaiownz]

Prepanning is just as fast as making it to chips if not faster.

[@ValExperimenter]

Imagine drilling, power is proportional to metal removal, cutting pressure is a function of the length of the edge cutting, and the cutting speed would vary across all edges. It might easily consume 4x as much inserts, and power to drill vs trepan. Consuming power and inserts to convert expensive bar stock to chips is something to be avoided if possible. 4140 is cheap compared to any of the nickel superalloys.

[@Aussiemachinist07]

buy that same size bar in inconel 718 and i guarantee your eyes will water. it's magnitudes more expensive than 4140.

[@Gottenhimfella]

@@Aussiemachinist07 ON a job he did recently on 718, he said the core retrieved from the middle of the hole was worth over UKpounds10k; another fair argument in favour of trepanning instead of spade drilling. Trepanning is better on almost every count, except that it's buggerall use in blind holes.

[@eviethekiwi7178]

Just thought yall would like to know that i got an ad for viagra on this video.

[@piavigdalsgaard2230]

i ran something 724 ... it was so shit full of chrome. I had to run 65 m/min in cutting speed and the inserts died like ... It's used to look up arse on small men with cancer in the age 40-60years .. those ...

[@robertriquelmy7193]

Less background noise please

[@stuarth43]

gee wuz looking at mech. properties of 718, tensile 1100,mild steel 275 on