I wondered that too, but not my design or choice.

Exactly. Just another good point that proves the ones who came up with this don't know their basics.

@@bigbattenberg 100%. This is absolutely a brand new engineer that doesn't have a clue what they're doing.

Dumb engineering that doesn’t understand what they are making. I have designed similar stub shafts and always leave a generous radius

@@TopperMachineLLC Still curious about the total time to hog that much off. Similar to welding where you take and make all the right fit ups for the thickness involve then have to feed three hundred 1/8 rods into the vee. I did this as a novice and always wondered how much time it should be taking. I noticed you let it cool off when approaching final dims. Then used a trial finish cut then measure it to closely match your dimension. I also like the fact that you did not make a center but used a center plate and relied on it to not shift thru out the process. I would have made a center hole and ran the live center into it and reef down on tailstock so it would not move. Good job.

Thanks. I wanted to do something different

Opening made me smile.

Had he crushed the coke can and made it splash blood everywhere, they you could call it a true Tarantino

@@insaneindamembrane7961 look closer. That's not Coke.

AGREE! Very cool intro with that big honkin' piece of steel rolling along! Reminds me of "as the Army goes rolling along!"

JOBBING SHOP I HATE SPELL CK. CHANGES WORDS TO ITS OWN THINKING.!!!!

@@silverbullet7434 Spiel chucker hand auto collect guts my gloat two! :-)))

...IF YOU SAY SO...

Loads of stupid comments on this video. All of them entertaining, none of them have a clue. LOL

"none of them have a clue" as in zero understanding 😞

All comments are grist for the algorithm mill. Never discourage engagement.

Fairly sure a forging is stronger, ref flow lines.

@@bostedtap8399 Yes a proper forging would be stronger. It is probably real close to a wash as to the cost of material versus having a forging made.

Interesting comment.

Was thinking the same, loved to watch David Wilks videos on those large trepanning jobs

Would you then trepan to a certain depth and part off the trepanned section?

@@bigbattenberg Yes you could. Joe

Unfortunately the low volume doesn't warrant the tooling investment.

New engineer that's never seen a screwdriver. This smells of inexperience.

I stated in the video, I have seen way more designs like this the last couple years. Most from very large corporations with teams of engineers. There must be a good reason that none of us are aware of.

@@TopperMachineLLC I am not so sure about that. Yet, if i were to speak in defense of this i would say that a weld could introduce human error in the connection of the two pieces whereas a solid piece is simply a solid piece

I am wondering if trepanning would have been a viable alternative. Less waste, less wear and tear on the machinery and a piece of metal for possible future use.

​@@Watchyn_Yarwoodor in the good old days it might have been hammer forged to save material, hourly rates being cheaper than metal.

The good chips should be yellow or blue in colour, as it means that they are taking the heat away from the part(in steel that is), and the shape should be 6`s or 9`s or C`s and S`s, as his were, if they are coming off in those small diced curly bits, its great... Of course, if you dont have coloured chips, it just means that the tool and the lathe arent working at optimal efficiency that carbide can allow for, which means shorter work time for you... The chips in most other materials have their own properties, and the colour should not be considered as an indicator of how effectively you are using the machine... The most important part is the size or better yet, the shape... As long as chips break off in bits of 2-12mm or so, you are having a good chip control... If the chips arent breaking but are curling or making whatever other shape, then you have a potential for surface finish ruination, for jamming, for cutter damage, for injuries to yourself, as that mess can just ``explode`` if caught by the chuck jaw and launch a razor necklace at your body, or it can catch and whip about and shred you like butter or pull you in if it catches you, and then you are done for, or in the best scenario, it can just spit out a mess of sharp ``wire`` at you which will land on your clothes harmlessly... You have seen how the chips here look, the size is less relevant and dependent on the cut depth, it just matters that they look somewhat like these ones here in form... All other factors are case dependent.... And some metals dont even allow the chips to carry the heat away, so even that part of the stated above is case dependent, but such metals and alloys are rare... Generally speaking... Even those curly 3-5cm chips are fine, as they break off rather quickly and arent a hazard generally speaking... One could even say that they are preferable, as they are heavier and fall closer to the lathe, making less mess overall... As long as they break off into nice manageable bits, its a good chip...

@@camillosteuss Thanks😲😲😲. I worked in a small steel fab shop as a laser operator, button pusher, for many years but I know nothing about a machine shop. I have a small CNC plasma cutter but there is something wrong with the software. I make some metal art. I had a home business but COVID shut me down. I am glad that God blessed you with greater skills than mine.

@@alanm3438 Its beautiful that you refer to it as metal art... I do too, but skill-wise, nah, im no master, im a lover of machines, and was learning all i could about machinery and adjacent fields and topics for last 15 years, on my own... Sure, i enrolled a mechatronics school to get some related diploma, but i was a gymnasium-agronomy college student when i was learning about machines... I never expected to own a single machine, but i do now, 12 of them... Skill is not learned, its acquired via practice, and while the theory is a great tool, its mostly what i have... I picked up mostly used machines in need of restoration, and that is what im doing atm... Sure, i have a few machines that work, so i am gaining skill, but i am mostly an apprentice in skill level, despite maybe being able to teach manual machining theory in school... I am great at tig welding for a self taught ``artist``, but my approach to machining is slow and steady, not only because machines should be used with care and love, but because i lack the skill to assume the deflection and all other factors that happen during machining, at least accurately to a toolmaker`s level... Dont demean yourself, and dont lament the loss of business... Restart it slowly, find things you can make and market online with love and surety of quality... Even if its a side job and something that merely drips in here and again... It will get better over time, and you will refine your catalog of products in accordance with your tools and with what is sought after by the public and is in your work range at the moment... Speaking of God given blessings, the good book teaches that God has only one son, which means that all of his creation is his one son, endowed with same attributes, as otherwise they would not be describable as a singular perfect extension of the will of God... If you love this field as much as i do, all the talents that i have are yours aswell, you just need be open to them and willing to learn how to reveal them... I was amazed at robin renz and people like that, but now i see that i can do the same, even if at a slower pace at the moment... If all is spirit, or as scientists would call it energy, then all has the identical potential and source with which all is one, and if you know of the dual nature of matter, which renders it apparently a particle, while its in fact a wave, you know that there is almost no difference in what science and religions teach, so dont ever falter and be downcast... Your love and devotion to the art of anything can not go without flourishing into an approximation of perfection... As much as matter is capable of manifesting perfection... All the best, and kindest regards! Steuss

Mostly, yes. But if the customer doesn't know the options and you're the professional, then you should know better. Or at least, you might know better. Don't argue with your customer, but if you can save them time and money, they will be return customers and free salesman on your behalf.

I would put that opening up against This Old Tony’s best !

I could have pushed much harder, but I risk shorter tool life. As it was, it handled it great

Nice to have a variety of inserts from around the world.

These are by far my favorite, but I use many different styles and brands.

@@TopperMachineLLC gc4320?

I mean, sandvik is just a brand. Entirely depends on your grade.

Have you ever tried Kennametal Fix Perfect? Thats an insert that can take abuse and it has 8 cutting edges. Grind a negative cuttinge edge on it and will even cut through 2mm surface harden 54HRC in one go, something i would never try with a CNMG insert.

Yes it will. I've been very impressed

While that might be feasible for a larger series production, I don' think it'd be worth the effort for a one-off or low number of items. Just think about the time the part takes to cool down after forging until you can machine it. Besides the uncertainty of properties after the heating (unless you normalize it again, taking another shit load of time)...

Never mine as he says this was a prototype part.

Thanks, but if you go by some of the comments, I'm a moron. Lol

@@TopperMachineLLC When one is asked to do what you have done - the train yard/locomotive work and the rest and the proprietary work… I tend to go with, “Good god…. wow.”

Thank you. The plate center has been a great addition to the shop and I have several sizes now.

WHY WOULD ANYONE DO THAT?

I am starting to see it more so the last few years.

How many do you need to be making before getting custom forgings is worth the effort?

@@benjaminshropshire2900 that's up to the customer. When they determine they want a larger quantity, they will start exploring options.

@@TopperMachineLLC true, as far as customer service goes. If the buyer wants it done one way and is willing to pay what that costs.... But I was asking a cost of manufacturing question. Does anyone have a ballpark idea of where the potential material savings becomes more than the cost of getting custom blanks?

@@TopperMachineLLC Indeed. When they want 100, they're stop making them like this. (and when it breaks in the field, the owner will not waste the time and money to make half a ton of chips.)

I've always used the baseline info for cutting, but was taught to tweek and produce better results. It's amazing how much you can push some inserts and have to baby others. I was nowhere near what I've pushed these inserts to, but I also know what gives me the best chip, tool life and surface finish. I could have pushed a lot harder but may have used up a few corners on the job. I did this all on one corner, roughing and finishing.

I got 3rd place.

It all goes to recycling.

Send me an email and we can go over these details. I really appreciate the help.

2 1/2" deep core drill, & then cutoff tool? Maybe make one if doing many of these, someone on KZfaq was making these from steel tube & inserts, to core out several feet deep on a lathe.. great video..

The taper is what they specified. I suggested a radius, but it was quickly shot down. Not going to push the argument and potentially lose the job or customer. It's hard enough finding work in this region.

Flood is way better for this application

Check level of your machine first. It should be checked at least once a year. Once level, then check your tailstock.