Machining The R8 Tooling For The Bridgeport Part 1

Cutting up & roughing out the stock for the project . Hard turning & parting 55 Rockwell scrap material .

[@somebodyelse6673]

Nice to see someone use reclaimed material. Many machinists won't even let stuff on their machines if they didn't buy it from a vendor to know exactly what it is and the state its in. Carry on, sir!

[@swanvalleymachineshop]

I could understand that if it was going to be machined in a cnc , but manual machines it makes no difference . Thanks Mate , Cheers .

[@dalejones4186]

Great video. This is the first time I have seen a steady rest set up properly. I learned something. Thanks

[@swanvalleymachineshop]

No worries , Cheers .

[@EverettsWorkshop]

I see we think alike in seeking good bits of old machinery for steel - axle shafts are awesome stuff, and I've noticed as well that the hardness changes depending on the depth. Makes sense as there is both hardness and toughness in the same part that way. Price is right, too!

[@swanvalleymachineshop]

It's good free steel that can be re heat treated . Cheers .

[@MyHeap]

Great start. Looking forward to seeing the rest of the series. Joe

[@swanvalleymachineshop]

Thanks Joe . Cheers .

[@outsidescrewball]

Enjoyed...great making of your own shop tools....

[@swanvalleymachineshop]

Thanks Chuck . If i was in your country i would buy them !!! Good quality tooling we have to mostly have to buy ex USA or England & postage costs are through the roof . Home shop made tooling is free tooling , it's not Chinese & made from American Caterpillar steel ! Cheers .

[@RagsdaleCreek]

Nice start to the new tooling. 👍👍👍

[@swanvalleymachineshop]

Thanks Anthony .

[@donmittlestaedt1117]

Than you Max. A pleasure to observe you work.

[@swanvalleymachineshop]

No worries , thanks .

[@Just1GuyMetalworks]

Wow! That's some serious parting off there, Max 😯. Beginning to think the babbit bearings for my spindle could use some re-shimming 😏. For some reason I love the sound of hardened steel being turned, awesome work! Thanks 👍😁👍

[@swanvalleymachineshop]

Thanks Chris . Parting in my little Southbend is a different story though . Cheers .

[@billstanley4819]

Parting off on the lathe always scares me. It’s nice to watch someone who really knows how it’s done. Thanks to you I’ve learned some new tricks. It’s a good day.

[@swanvalleymachineshop]

No worries . Cheers .

[@houseofbrokendobbsthings5537]

Morning Max! Hope weather is helping the rest of the continent to stop smoking. It’s been pouring rain for two days here in Michigan. I have been looking at these hardness files for a couple of years. Not pulled the trigger yet. Glad you are doing this series - I will follow your lead to make a few R8 adapters when I get a break from work. That was a nice trick for the steady centering. All the best. _Dan_

[@swanvalleymachineshop]

Hi Dan , we can't remember what rain is this time of year ! The hardness files give a great ball park indication . Cheers .

[@guyloughridge4628]

This is a terrific series. I first discovered Part 10 of this series... So here I am starting at the beginning and enjoying Part 1. Thanks for the tips on parting! Cheers from Arizona in the US.

[@swanvalleymachineshop]

Thanks Guy . Cheers .

[@bigblue1402]

Very interesting max. Given me a few ideas there fella

[@swanvalleymachineshop]

Thanks Mate . Cheers .

[@dazevers]

Hi Max, great first part on this project, great tip to stop the chattering, by running the lathe in reverse. Any my friend have a great week.

[@swanvalleymachineshop]

Thanks Daz . Have a great one your self , Cheers .

[@pontoonrob7948]

This is going to be a great series...

[@swanvalleymachineshop]

Thanks Mate , Cheers .

[@rescobar8572]

Greetings to you Max all the way from El Paso, Texas USA! Loved the video and I SUBSCRIBED and LIKED your video! Thank you for sharing!

[@swanvalleymachineshop]

Thanks Rolando . Cheers .

[@yvesdesrosiers2396]

Thanks for sharing. Experience and know how really shows. You handled that like a champ. Looking forward to the next one. Cheers

[@swanvalleymachineshop]

No worries . Thanks .

[@metalworksmachineshop]

Nice work so far, wish I had half your knowledge.

[@swanvalleymachineshop]

Thanks Doug . Cheers .

[@roysmith3198]

This is the first time I watched one of your videos. Been learning about machine shop on you tube for almost a year, so I'll be a little more knowledgeable when I get a hobby lathe and mill soon. First time I've seen steady rest set that way. I know I can learn a lot more right here so I subscribed immediately. I've watched a lot of Abom, TOT, keith Fenner & Rucker ,Mr Pete, Joe Pie and others, looks like almost 90 vids to catch up. But I love binge watching good machining.

[@swanvalleymachineshop]

Thanks . Joe pie has some good solid info , just don't get to hooked up on the complexity of some of it ! The online trig calculator is our friend now days ! Cheers .

[@MattysWorkshop]

Gday Max, I definitely learnt a couple of things about parting off so thank you very kindly, great start to the year and this is going to be a great series of videos, Matty

[@swanvalleymachineshop]

Thanks Matt . Has the fire situation around your area improved yet ? Cheers .

[@MattysWorkshop]

At the moment it’s not to bad but in saying that there is 2 fires (190000 HA approx) to the Sth that have combined and 3 fires (280000 HA approx) to the nth, there is a lot of bush to the west that hasn’t seen fire since the late 70’s and the old timers I’ve spoke to are saying it’s a long way from over yet, just got to keep a good eye out and hope for the best.

[@nectouxpierre4634]

Nice use of the Cat scraper pin!

[@swanvalleymachineshop]

It's good steel . Cheers .

[@nectouxpierre4634]

@@swanvalleymachineshop yes because all the pin I did at work is in alloy steel.

[@RaptorMachineToolCo]

Coming along nicely Max!

[@swanvalleymachineshop]

Thanks Joe , Cheers .

[@MrValhem265]

Enjoyed.

[@swanvalleymachineshop]

Thanks Robbie , Cheers .

[@RockingJOffroad]

Nice, I need to remember the parting in reverse. I seem to have more problem parting off than any other operation!

[@swanvalleymachineshop]

Just make sure you don't have a screw on chuck !!! Cheers .

[@chrismate2805]

Thanks for showing the steadyrest trick.

[@swanvalleymachineshop]

No worries . Cheers .

[@TedRoza]

Hi Max .. Great couple of video's doing the R8 Mandrills etc, and now getting the oversize shaft to sit in your lathe, was a good bit of Video, as well as Parting Off Procedures whether in forward or reverse techniques etc which shows your expertise in what your doing. Something to help the Novice when they get stuck, and can refer back to your great machining. :) Jobs well done, keep up the great work.

[@swanvalleymachineshop]

Thanks Ted , Cheers .

[@hmw-ms3tx]

Hello Max. Exactly one year ago I posted a video where I was hard turning from headstock to tailstock. You left a comment on that video where you said you had good luck hard turning with a Dorian insert. I just checked back and it was the insert you are using in this video. The fact that you roughed out that entire part with one edge is impressive. I am going to try to get some of those inserts as I have a bunch of old Cat loader pins that I have been ignoring because of the difficulty I've had machining them. I think the inserts you are using will do the trick. Thanks for the information, Ken.

[@swanvalleymachineshop]

Hi Ken . The Dorian insert is still going on the same corner & i am still roughing out the other arbors from that Cat axle . The parting inserts that i use are Iscar TAG N3C IC808 , They are the best parting inserts i have ever used & would be worth your while checking out .

[@DudleyToolwright]

I was wondering the whole time what you were going to do at the end of the part. If you had 2 steady rests it wouldn't be such a big deal, but with one the end of the part could have been dramatic. Towards the end when you were parting off the rough tool it looks like you are making some razor wire to protect your new workshop...nice idea. Always fun and informative Max.

[@swanvalleymachineshop]

Thanks Rob . Razor wire , great idea !!! Cheers .

[@hmw-ms3tx]

Hello Max. I have watched this video several times now and I started noticing the flow of coolant out of the nozzle. Your set up is like mine and I used to get unstable flow at low flow rates. The coolant stream waves around and won't stay in one spot. This used to drive me mad, especially when parting. I discovered that if you start the coolant at a high flow rate and let it stabilize, you can then throttle it back to as little as you want and it will stay stable. I'm not sure if that works with every coolant set up but it does on my lathe and both of my milling machines. Please forgive me for the unsolicited advice. Ken

[@swanvalleymachineshop]

I think it's worse with the plastic flexible coolant pipes . one day i will change it to the steel flexible ones & see how it goes . The best ones were the old type extendable tube types but they were a pain to use with boring holes . Thanks Ken , Cheers .

[@woodscreekworkshop9939]

A lot of work ahead of you. I have to make few R8 tool holders too

[@swanvalleymachineshop]

It is a lot of work but you have to make things to be able to make things !!! Cheers .

[@davesalzer3220]

Thanks. I need to make a few of those myself.

[@swanvalleymachineshop]

Just do it ! Cheers .

[@richardbradley961]

HI MAX, LOOKS LIKEE YOUR GEOING TO END UP WITH SOME NICE TOOLING AND A LOT OF SWAWF !!!!!!!! REGARDS FROM U.K.

[@swanvalleymachineshop]

Thanks Mate , probably a wheelbarrow load ! Cheers .

[@hilltopmachineworks2131]

Is that a long haired Shepherd? Some nice scrap to work with. Never ran across anything good like that at the recycler. I think the best score I got was a 2.75" diameter by 4ft round bar of 8620.

[@swanvalleymachineshop]

Hi Tom , Yes he has long hair , gets every where ! 8620 would be a great chunk to get hold of , ideal for what i am doing now . I keep a close eye on the scrap from work , most is wear plate or hardened pins ! But it's all good for shop made tools as the budget is focused on the new shop build . Thanks .

[@eyuptony]

Hi Max. Enjoyed the hardness testing demonstration and the diagnostics on rectifying the chattering parting off tool. A question on the coolant/cutting fluid. Does it actually reach the cutting tools effective cutting edge while you running in reverse as the coolant is supplied to the back of the cut? Just a point I noticed as I was watching the video. Thanks Tony

[@swanvalleymachineshop]

Hi Tony . Some of it does but the main thing is to keep everything cool & that it still does . Good inserts are not cheap & i find the coolant prolongs the life of them . All 12 Arbors were turned with the same corner on a CNMG insert & the case hardening on that bar was 5/16 to 3/8 deep 50 - 55 R . Cheers .

[@honeycuttracing]

Like your style sir, rather build/make something than buying it!!!

[@swanvalleymachineshop]

It's all about the non existent budget !!! Cheers .

[@honeycuttracing]

@@swanvalleymachineshop it's the same story here, but we keep going!

[@ChirpysTinkerings]

Cool project max, looks like you'll be set on tools in the end too for the mill, lol. I need to make up a few stub arbors for myself also, just need to get more truck axle because the grinder ate all of it that I had, lol. What kind of truck did yours come off of that it was that large?

[@swanvalleymachineshop]

Hi Chirp . The axle i have had kicking around for years . It's from a Caterpillar earthmoving machine , but unsure what model . For the bridgeport tooling it will be fine . Cheers .

[@ChirpysTinkerings]

oh, ok, quite a large one anyways and will have to look for some of those for making the cat30 taper tooling for my mill, lol. I had to normalize mine before I could machine it, it was so hard that even carbide didnt want to really even touch it, and hardened like it is, I was worried about the stresses coming out and causing the material to move as it was machined, so normalized it to try to help without removing too much of the hardness when working on the grinder build.

[@brwesi]

I am curious why you didn't cut the material to length in a bandsaw. I have subscribed and have been watching all of your videos since the beginning of your channel. Not a machinist, just a wannabe. I do have 2 Bridgeports., Kent KTM 380, Logan 6560, 2 Clausing 15 x 50, Sheldon 13 x56 and an Oliver by Adrian tool and cutter grinder. Don't know how to run any of them but am learning a lot from guys like you. Thanks!

[@swanvalleymachineshop]

The material was hardened & i did not want to risk damaging my bandsaw blade . You seem to have quite a few machines there 👍

[@chrisstephens6673]

Doing your bit to end the world shortage of swarf, good man!😉 Will you do all the machining on the lathe or just the R8 bit and then finish the business end on the mill for accuracy purposes?

[@swanvalleymachineshop]

All will be done on the lathe in one setup for the final grind . Cheers .

[@onehot57]

Hey Max how would you run your lathe in reverse if your chuck is a screw on! Great job mate!

[@swanvalleymachineshop]

You don't , what you do if your cross slide will permit , is to fit a rear mounted tool post . On my small South Bend it , has a different cross slide that my Dad made in the 60's to fit a rear tool post & a milling attachment . There may be a shot of it in earlier videos . Cheers .

[@geoffreyward4743]

hi max ,is there a reason you did not eneal the bar stock.

[@swanvalleymachineshop]

Cost & i am still looking for a company that will heat treat parts , it used to be easy but there is way less heat treating company's around these days that will do that sort of stuff .

[@paulskelton6836]

Hi Max, What's the grade of the Iscar Tang Grip parting insert. Cheers

[@swanvalleymachineshop]

TAG N3C IC808 Single cavity . The best inserts i have ever used .

[@paulskelton6836]

@@swanvalleymachineshop Thanks

[@paulskelton6836]

@@swanvalleymachineshop Thanks

[@stevecallachor]

I'm curious as to why r8 is better than mt4 since they both drive drive on a tapered surface and have the same axial Load to secure engagement. Stephan the curious one

[@swanvalleymachineshop]

The only advantage with R8 is it is not a locking taper like MT so it's easier to remove the tool . Unlike the MT the R8 relies on the dowel pin to stop things spinning . I am not a fan of R8 as you have to use an adaptor for MT drill bits but that's what my Bridgeport has . Cheers .

[@techronmattic5876]

Made short work of cutting down that large stock, how the hell did you get that in the lathe, must be 200 kg or more

[@swanvalleymachineshop]

Not as heavy as it looks , a few kg's though !

[@leeklemetti1887]

@@swanvalleymachineshop It seems to me that the lathe camera makes the stock look like 8 inches (200mm) instead the 4 inches (100mm) that shows up on the one @ 30:43 . Great video.

[@stuartmorris4694]

Nice work on a not big lathe very rigid

[@swanvalleymachineshop]

Thanks Mate , Cheers .