Machining 4145 steel. Roughing and finishing cuts

[@userwl2850]

This is a follow up to the "complete guide" video without commentary so you can watch how I do it. I didn't finish turn it first as I needed to maximise the lathe time so I could do other work as this was being drilled.

[@hugster5052]

Thought you sold up?

[@davidrussell8689]

Anyone in the metal bashing business can see this is serious stuff ! Totally impressive, totally professional .

[@Just1GuyMetalworks]

Some serious chips there! Wow! I didn't know what the notches were for at first, but I guess to help form the wood block to fit the bore. Very cool process, thanks for sharing! Cheers 👍😁👍.

[@bcbloc02]

Nice looking part! I can't wait for a big turning high removal rate job to come in the shop!

[@liamrobertson7265]

daves a fucking diamond. hope yer good mate wherever you are these days?

[@stephenweir2003]

That was very sweet running!

[@ChrisB257]

Another huge 'chunk'... but friendlier material! Chips are gorgeous. Lot of material to take off. Looked like a comfortable 1/4" cut with hogging - nice. Just noticed when trepanning,.. earlier stage, the steady wheel didn't look square to the work... though if finishing cut yet to go probably no big deal. Now that's a boring bar!! Hard to imagine what this is for but, super finish Dave. Enjoyed that. ATB.

[@paulcarre4719]

pissed myself laughing at the "when I grow up" post it......

[@geoffgreenhalgh3553]

I have worked a TOS. You can guess what we called it.

[@kisspeteristvan]

@@geoffgreenhalgh3553 are they not good ? how are they compared to monarch leblond and dsg ? I ask because at my workplace we have 5 tos lathes( 1500mm between centers )

[@jamespark_85machiningtv]

@@geoffgreenhalgh3553 excuseme. is this place in the video TOS? Something has problem?

[@peterclark659]

Don't know what that "pipe" is for, but it's bloody impressive. Great work👍

[@TimS366]

Brilliant and fascinating as ever. Keep em coming.

[@SomeGuyInSandy]

Why the radially place cold chisel cuts around the bore? Are they to help shape the wooden support as it enters the bore??

[@userwl2850]

Yes exactly that. 👍

[@SomeGuyInSandy]

@@userwl2850 Like everything else you do in the plant, it makes total sense.

[@davidgumley.8373]

David what are all those steel pipes for a better word used in.

[@Barnekkid]

Do these boring bars remain true to the end of the cut? The don't wander?

[@swanvalleymachineshop]

Another great video Dave . Cheers .

[@sjmunoz]

May i ask what kind of inserts you are using ?

[@donwright3427]

I used to machine large diameter nylon.If you get the feed rate just right the nylon will come off in in long threads and you can suck it up with a hoover which is better than getting wrapped around your lead screw and chuck

[@kisspeteristvan]

What's up David , i have not seen anything new in a while , hope all is good .

[@paulperrin2152]

Why no top pad on steady??

[@jamespark_85machiningtv]

What kind of component is this for?

[@waynep343]

Hell of a golf player you are. Lots of Holes in One..

[@alasdairhamilton1574]

Could have faced the ends😂 or was John Smith call you? 👍👍🏴󠁧󠁢󠁳󠁣󠁴󠁿

[@RossiDeakin0406]

That lump looks very familiar, I'm sure that I put the 21x 0.500"dia.x80"deep gundrilled holes in it.....🤔(express eng) maybe?

[@joedell71]

I thought you sold all of your machinery?? Did you get more?

[@markfoster6110]

You make it look way 5o easy ! Hope you have an apprentice to clean up the swarf .

[@paulperrin2152]

What speed and feed did you use ??

[@taile4229]

Where you live David???

[@ronnydowdy7432]

How long to do 1

[@aubreyaub]

+ or - Tolerances tight..? ...and who makes the steel..? Nice.

[@jameslaurencesmith7537]

china

[@boostie1005]

Fun Running more than one machine at a time.

[@judgedredd]

What happens to all the swarf? Do you throw it away or sell it for scrap?

[@tfp777]

Chisel marks to break the chip?

[@davidb6576]

To cut the wood padding to size as it enters the workpiece. You see it at 7:22 as the boring head enters the tube. With the pads cut he gets support for the boring bar so it maintains size all the way through.

[@chrishartley1210]

Thanks, I missed that, I wondered how the bar was supported.

[@lerkzor]

@@davidb6576 I came here looking for this answer, thank you!

[@roeng1368]

Whats 4145 in English ? EN19 ? EN24 ?

[@gj91471]

Yes

[@futten3230]

gotta love a tos

[@Pnrc-b2u]

Another good’n

[@svehli4867]

Good joke with that dsg tag there. Btw iam from where this TOS lathe was made, its a good lathe, actualy we have only tos lathes here becouse of comunism so. Maybe one day i will visit GB ant try one DSG for my self.

[@userwl2850]

I have a video I will upload in 2 days working on the Tos lathes. There are 3 all same model. Old manual lathes.... DSG wins every time. Merry Xmas to you. 🍺👍

[@guypatts494]

Bad ass

[@percival23]

I don't know why but the cutting of the ID just after the 3 min mark looked somewhat ......pornographic.

[@madaxe79]

Hey I have a TOS and a DSG and the TOS is way better... just sayin

[@piavigdalsgaard2230]

Its quite high speed in rotations you run .. so I would say ... that you run maby 100 in cutting speed? ? or maby even more ? n = 318*(v) / Diameter of workpiece ... rit ? .... I bring bacon and Danish Quality beer if you answer !! ( Maby a bambi in a box ,... shot on mainland ) ( No arabs or fox here rit now .. they gone to sweeden to make problems )

[@piavigdalsgaard2230]

you mix around those inches and milimeters. What do you stick with in Private? it's 10 inches long or do you say milimeters? thats some royal GB thing right? After Lady Di went away it has gone totalt fuck.. and now you guys are leaving EU ? Are you going to import our bacon still? And can we fish still on the doggers? We make the baby fishes in our part ..

[@userwl2850]

If you are Danish then we will always have your bacon. 🐷😉 yes we use old English measurements still.. but we buy foods in kilo... not lbs and ounce anymore. 😓