Make A Trepanning Tool. TURN BORE AND MILL

[@wings808]

Thanks for filming this, and yes, I like to see more videos covering this please!

[@userwl2850]

I have a few now. 👌

[@billrichardson4873]

You make it all look so simple... when there is so much to consider when doing material of this size!!! Great Job.

[@userwl2850]

I will put a video on new years day with a full commentary. 30 minutes long if you have time to watch.. Merry Xmas

[@billrichardson4873]

@@userwl2850 would like that very much!

[@MakinSumthinFromNuthin]

Always a real pleasure to watch you manufacture the trepanning tools. Works of art really. Hope things are looking up over in the UK for you David. All the best ~ Richard

[@userwl2850]

Thanks Richard. The uk is in a mess with this brexit. Hope you are well buddy.

[@StreuB1]

It is always impressive to watch you make these tools. This is by far the most impressive due to its overall size. WOW!!! A master at work. Well done and thanks for the video, as always!

[@userwl2850]

Thanks Brian. Always a great comment from you. Cheers 🍺

[@kyledombrowski7051]

Love hearing engine lathes load up like that

[@cher176]

Definitly best youtube channel about big and exotic stuff trepanning

[@userwl2850]

Wow.... great compliment thanks buddy. 🍺

[@LittleRestraint]

Fascinating stuff pal, love it.

[@swanvalleymachineshop]

Good stuff Dave . Good to see you doing a job back in your old shop .

[@userwl2850]

Thanks buddy... I'll catch up with your videos. 👍

[@jimdorman1550]

Glad you're back! Every so often!

[@paulcarre4719]

Love the roughing cut - mare than I would dare that is for sure - Great channel & content as usual.

[@userwl2850]

Cheers Paul. 🍺

[@johnswilley6764]

I love your craftsmanship, beautiful work. And I was thinking you were going to use a treppaning tool to do the bore...yeah, right. Thanks for sharing.

[@userwl2850]

It needed to be a depth bore. Not possible by Trepanning as it leaves a core.

[@pearcemachineshop5200]

It’s great just watching the process and the finished tool looks the the dogs 😁 hopefully things are picking up a bit. Al.

[@userwl2850]

Thanks Alan. I'm here now making the next one. 😴

[@hullygully-3599]

V interesting thanks. Any chance to see a video of you mounting and clocking these bars please. It’s something we rarely see.

[@userwl2850]

Good idea.... I'll do that 👍

[@nectouxpierre4634]

You make really nice tool, great video

[@nicovmods]

userwl, the trepanning guru, great video

[@userwl2850]

Cheers Nico.. 🍺

[@endeavour2127]

Fascinating!! Subscribed!!

[@catabaticanabatic3800]

Superb work. Good luck for the future.

[@userwl2850]

Thanks buddy 🍺

[@thecorbies]

Impressed!!!! Despite you using, what some would refer to as 'old kit', you get some amazing finishes. VERY impressive stuff. Regards Mark in the UK

[@userwl2850]

Thanks Mark. I always say "The old ones are better" especially to women 😉

[@sunppaa]

Awesome work and tool!! Hope things are getting better there!

[@userwl2850]

Hi Sam. I hope you are busy 😉

[@ChrisB257]

That's some heavy machining. Certainly a major operation making trepanning tools... I seem to remember a video you did a ways back about aspects of machining those. Included your milling operations I think, like you were showing here. It's fascinating to see this Dave - lot of work and super results.

[@userwl2850]

Thanks Chris. Always a great comment from you. I appreciate it. 🍺👍

[@HH-Machining]

I would want to see More machining, moving the parts, dialing them to get them aligned with previous cut, how you turn them to angles for drilling/milling. Good stuff! Thank you :)

[@userwl2850]

Good idea. I'll do that 👍

[@HH-Machining]

@@userwl2850 Nice! :)

[@mitchelle05]

I recommend you watch joe piezynckie and abom79 they are gods.

[@JamesWhite-nv2lu]

Great job good precision 👍☘

[@userwl2850]

Thanks James.

[@nikolaiownz]

Awesome work mate. I would love to try making a trepanning tool one day forsure.

[@userwl2850]

Yes try it.... it's quite enjoyable. 👍

[@Donkusdelux]

Personally, id love to see longer videos of you making tooling! love watching this stuff :)

[@Donkusdelux]

Just finished the video, and wow. that is one majorly impressive drill!! Beautiful work 2850!!

[@userwl2850]

I may do but they would be longer videos and people may get bored watching. 🤔

[@karlhrdylicka]

@@userwl2850 NO way would anyone who is interested in manual machining or large tool making ever get bored with the videos you make . YES a few more longer ones please if you can devote the time to make them .Chris east midlands GB.

[@userwl2850]

@@karlhrdylicka Thanks for the support Chris. Makes it worthwhile making videos if people enjoy watching them. Cheers buddy. 🍺👍

[@Donkusdelux]

@@userwl2850 I to would enjoy longer videos, I make a coffee and just enjoy the craftsmanship. 30min to an hour videos are very nice for that!

[@crozwayne]

Great work! And showing the universality of the ubiquitous Bridgeport turret mill! I just replaced mine with an interact 4, but I dont make anything near the size of your work!

[@userwl2850]

You got rid of your Bridgeport? They are brilliant machines. I hope you don't regret it. 👍

[@millomweb]

@@userwl2850 I felt you are fan - and that's why I came to watch this video. I guess on mine, I'd just have to slide the work along the table - although I might prefer that as a technique than swinging the BP turret. It'd be an interesting challenge getting a longer movement than the table actually has. Maybe keep the table still and slide the work along it through guides. Hmm, a powered roller on top of the table for the work to rest on and be propelled through the mill - with weight support at each end.

[@davidoleary2452]

a thing of beauty Dave, aint it amazing what a bridgeport cant put up with great mill

[@userwl2850]

My favourite machine.

[@davidoleary2452]

@@userwl2850 i Managed to fit a mcconnell hedge cutter head shaft on mine other day flails and all on it, made me think of your comment

[@shawnmrfixitlee6478]

very cool share man , ENJOYED !!

[@userwl2850]

Cheers Shawn 👍

[@BluesDoctor]

David, my ambition is to design a much smaller tool. The cost benefit is not as great on smaller stock but saving a bit of otherwise wasted expensive material is satisfying especially if any number of parts are required. It would be nice if you could walk through the geometry and clearance issues you intuitively know to facilitate scaling such a tool down for smaller work or indicate some resource(s) on the tool design details. As always, a delight to see your work on such a scale.

[@userwl2850]

Thank you for your kind words. This type which I make start at 65mm. Any smaller and it needs to be a hole saw or rotar broch. Hope that helps.

[@BluesDoctor]

@@userwl2850 Thanks mate. 65 mm is the size I had in mind. Inserts I imagine are the limiting factor. I am intimidated by not having attempted this previously. I see what I see and hear what you say, I need to give it a go and see how I do. I will go back each day or so and review your collection of videos one at a time to build my confidence. Thank you and best of luck for a prosperous future.

[@HP_rep_mek]

Cool tool, nice build👍

[@userwl2850]

Thanks

[@MachinedComponents]

Hi Dave, thanks for the video's I love watching them and have learnt a lot. Could you please explain why you choose to turn away from the chuck. thanks

[@userwl2850]

Watch my video "unconventional turning explained" that will answer your question. 👌

[@heliarcweldandmachine]

Dave whats the facemill you use ? been on the lookout for a new one ? thanks

[@stuarth43]

Wonderful effort there's not much left in the wall thickness after that flat is machined in

[@userwl2850]

After the scrap channel is milled it leaves a 2mm wall. Not much and it's the weak point on these tools.... they do split.

[@millomweb]

@@userwl2850 Looks to me like it's undercut as the cutting tool tip insert doesn't even reach the bore.

[@hepburn118]

G'day, really cool to watch a really good machinist at work. I was just curious with how you clocked the work piece when it came back from being bored with it being so out of round like that. Was the bore pretty much concentric at each end so you could clock the outside at each end and know the bore was all good too?

[@userwl2850]

That's it exactly Shaun. 👏🏻👏🏻

[@hepburn118]

@@userwl2850 Cheers, helps us machining mortals to know how you did it mate.

[@Max_Marz]

Is there a place I can buy those insert holders?

[@craignicholson505]

Nice one David make the videos as long as u want we all like watching metal been removed

[@userwl2850]

Craig... thank you buddy. Always a nice comment from you. I appreciate it. 👍

[@theessexhunter1305]

Nothing beats a Bridgeport

[@userwl2850]

There are many copies of the Bridgeport but none compare to it. As a manual mill they are the best.

[@MrBen527]

Very cool sir! I see now!

[@precisionmachinedcomponent8974]

Great Video. Awesome work. I also made smaller trepanning tool which can bore just 36mm hole only. The purpose behind making tool is to reduce spindle load. I used to make hole with U drill but with that spindle load goes up to 60%. So I thought by reducing cutting area we can reduce spindle load, just an experiment. And my new tool worked with load of just 30% and of course we get better price of slug rather than scrap. I only have one problem of chips, it stucks between tool and work-piece. I have fixed both cutting insert parallel, can you please suggest me by offseting one of them will help me? if yes which one should I change inner or outer ? Thank you fore reply.

[@adrianjackman9422]

Have seen a few of these and love your work. Been in toolmaking for 46 years but on the small size stuff. Just one question if the bar runs out .030" due to stress why does the bore not run out the same amount?

[@userwl2850]

It does exactly that... good question 👏🏻👍

[@johnstrange6799]

That was great!

[@userwl2850]

Thanks John

[@greihawk]

I'm curious if you have modified your tailstocks clamping arrangement to stop slippage, although the load is probably not much on this one, i'm quite sure its a hell of alot higher when machining the super alloys you get? Or do you rely mainly on your chucks holding force?

[@userwl2850]

There are 2 ... 1" bolts clamping it down. The motor would pull up before they moved. Thanks for the question.

[@zodiotekgaming]

Some absolutely fantastic work there, massive undertaking and achieving the tolerances on a part that size manually is top skill. I previously thought your trepanning tools would be made from a grade of tool steel before hardening and tempering to add to the overall yield strength? Minimalise undue flexing?

[@userwl2850]

I usually make them from EN24T.

[@MaximumDistortion2]

Yes, do the more detailed video! What particular inserts do you use? I'm asking because it seems that you always use the same inserts, regardless of what material you machine. To me it looks like you use inserts for steel or maybe stainless, even on materials like inconel. Have you ever tried special inserts for alloys like inconel or monel?

[@465maltbie]

He already did that, a year or more ago, look at his previous videos. Charles

[@MaximumDistortion2]

@@465maltbie Do you mean that video? watch?v=4WroxA1woAs I already knew that video, but i found nothing about the inserts for outside machining.

[@userwl2850]

I've made a longer video I will post Xmas day. Thanks for the idea. 👍

[@stuarth43]

Where did you serve your time Dave and when did you come out of it

[@rogerwilliams2902]

You make it look so easy !. That chair looks a bit uncomfortable ........

[@userwl2850]

🤣 yes.... I won't be sitting on it

[@peterfitzpatrick7032]

10:25 ... whats the min. wall thickness left here ? 6mm ? 🤔 I'll stick to turning the small bits ... 🙄😉 😎👍☘🍺

[@userwl2850]

2.5 mm the bore needs to be true so not to break through.

[@peterfitzpatrick7032]

@@userwl2850 😱😱 100 thou ain't much ... 😟 😎👍☘🍺 Edit ... btw.. the youtube email I got from you wouldn't let me open this link, ("cant load link")I had to search for you.. 🤔

[@hmw-ms3tx]

Hello Dave. Nice work. I noticed you sent them out to be trepanned. Was this because they were too long for your current machines? I assume when you get the Craven up and running you would be able to trepan that length yourself. By all means make more videos and make them longer. Thanks, Ken

[@userwl2850]

Hello Ken. I sent them out to be bored to a depth of 48" to leave it solid for the shank. Not possible by trepanning. Yes it's exactly the type of boring I bought the craven to do. I hope to do that but who knows 🤔

[@aaronasham7519]

Hi there, I'm Asham, I just want to ask you something if you find it suitable enough kindly answer. I've just started in a shop as cnc operator, my employer wants me to register as an apprentice, but I just want a suggestion from an experienced guy like you whether this trade is good or not, does it gave you a decent living, and how easy it is to open a small machine shop and operate it. Really appreciate if you can give advice. or anyone Thanks and Regards Asham Calgary

[@userwl2850]

CNC machining is a great job... Not so much doing the work but doing the programming. Good luck with your choice.

[@andypandy9931]

Interesting work, I didn’t see how you drilled and bored the inside

[@userwl2850]

Hi Andy. I sent it out to be bored.

[@bcbloc02]

@@userwl2850 You didn't have a smaller tool to trepan that one with?

[@userwl2850]

@@bcbloc02 they were bored to a depth of 50" to leave the end solid. Not possible to depth bore by trepanning.

[@sethbracken]

“But its a Bridgeport, and Bridgeports don’t have problems.”

[@userwl2850]

😉 the lathe is a Dean Smith and Grace .... they don't have problems too. 😎👍

[@geoffgreenhalgh3553]

@@userwl2850 I have been a turner for 49 years and yes DSG are great lathes.

[@piavigdalsgaard2230]

180 sno and around 0.6 feed m/min rit Mister Wilks ? Looks good. You look good. remember teatime ... I send more Bacon.. ! !

[@facecomc3484]

Super work man, excuse my ignorance but what type of tooling would be used to bore the solid out to that depth? Regards from Ireland 🇮🇪

[@kisspeteristvan]

Kennametal HTS exchangeable head , and adjustable cartridge drilling system , up to 10.63" or 270mm dia , and 10xD depth . This is the easy way , but you need a large horizontal with at least 100Kw spindle and tonns of torque .

[@userwl2850]

Sandvik STS deep hole boring heads.. best ever. 👍

[@kisspeteristvan]

@@userwl2850 That's the one that ejects the chips into the body off the tool , and coolant flushes it out ?

[@jcurran8860]

I just found your channel. Very interesting.Have you though about changing that silly Name to "Mr Trepanning"?Thank you

[@userwl2850]

I changed it now to my real name

[@nicknick-ht5dv]

Dsg best ever

[@userwl2850]

Absolutely..... Bridgeport mill too. 👍

[@ЖелезнаяЖизнь]

WoW!!!

[@ИгорьСухов]

Большое сверло.

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