Wohlhaupter Boring Head - Perfect Restoration (From Mk5 to SK40) 

That is rather exciting for a boring head.

Wounds and bruises are the honor of the devoted machinist ! ! !congratulation ! ! ! !

Great to see the inside, thanks for the video.

Well done!

Used one of these back in the 60’s , apprenticeship happy memories on toolroom work.

Awesome video!

I have one of those. It is the most beautifully made thing I have seen. Little touches like the small balls that lock the leadscrew unless the hex key has been inserted. I have considered changing mine to the standard Wohlhaupter interface, but the fact is that it is too big for my milling machine really, and I have a UPA3.

The ability to Bore and Face - very useful.. Very much liked using these boring heads 👍

Nice job, I have also a UPA 4 with SK40 and opened it up for cleaning. Also I have a Multibore 236. Really like these precision tools.

Thank You very much for the video. - I just got for myself a plain body of UPA4 from one auction and knowing nothing how it works. Well shown in the video thanks!

That's some fine work! Thanks.

Wow, beautifully done conversion!

I have a UPA-3 with a B&S 9 taper shank that I need to refresh. This was very helpful!

Great vid again! Looking forward to your next one :)

MAN THIS IS ONE OF YOUR VIDEO UNDERRATED BUT WOW ,WOW ,WOW VERY GOOD .

Beautiful work 👍🏻 Thanks

Looks good to me. Nice work

Now that’s some nice work.

Very nice work!

You are indeed a craftsman.

Nice Video - nice work - nice engineer :)

Un lavoro : ECCELLENTE. Master ...

I have the UPA-5 with removable adapter. Mine is a INT-40 adapter which suits my Huron Mill, very unique way of attaching the Arbor. They truely are a beautiful bit of tooling.

Very nice, thanks.

It´s nice I like it!!!

Nice rebuild / save a tool

Fantastico!

Great modification. I would like you to face a moderate amount of surface area / spot face area to check the perpendicularity of machined face w.r.t. the bore, which eventually will give you an exact idea how precise you have made the modification.

Great work !! I'm making a new SK30 spindle to my Mk4 spindle of my Wohlhaupter UPA3, on the Mk4 taper there was a Sk40 sleeve for the Deckel Fp1, it was impossible to take out, maybe it was put at high temperature with a press on the Mk4 spindle, i cut out the Sk40 with the late and with the same tool insert like your; now i try to make the Sk30 spindle, thank you for your nice video !!! Alberto.

Very nice. I have the same head with a odd arbor on it. I'd like to make 2 different arbors for it. One 50T for the horizontal K&T and a 40T for the vertical head on the K&T.

4:27 I was expecting a laugh track to kick in

Man, I have a UPA 4/S5 that has a 1-1/2” shank.. I need a R8.. I’m considering modifying it but I’m concerned that the little Bridgeport can’t handle the large head. These Wohlhaupter heads are a true masterpiece. And hard as glass ! I’m shocked that you could even turn it ! I would imagine that once you get below that case hardened layer it’s probably just like turning 4140 or 1144. But I have a feeling it’s pretty deep. I’m worried about tearing mine down in fear I won’t be able to reassemble it. Your video gives me some confidence.. not sure if it’s enough though. lol 😂 Also I’ve been trying to find out what in the heck accepts a straight shank that large with a Key way and two 1/4” dimples ? It’s just shy of being long enough to cut down to an R8. It has a 3/8-18 threaded hole in the end too. I’ve never seen any tooling like it. But this is by far the best video I’ve seen on modifying a boring/facing head. Thinking about ordering some diamond tip inserts and having a go at it.. 🤷‍♂️

Amazing work! How do you set the correct bore diameter, without having an optical system for measuring the tool radius ?

That’s sweet 12 different feeds for dia feed...? That sounds great..count the clicks an it’s so much per rev...a nice piece..cheers

Nicely done, you had me worried there for a bit, I probably would have tried for an interference fit but it's not going anywhere. I've been looking for and dreaming about getting a Wooly 3 or a Japanese copy with an NT40 taper but they are thin on the ground in Australia! I believe they are much more common in Europe. Thank you for the look inside that work of art.

👌👍👍

You have an excellent taste in music, was that the radio playing in the background or did you have your own playlist on? If it's the latter, I really would like your playlist. It sounded like the perfect music to have on in the background while your working in your machine shop 😊

Years ago I had plenty jobs using these Wohlhaupter. I hated them. It was like stoneage working. One of them was every time in a shop for rebuilding. But if there is no other option like CNC they are useful.

Schaut für mich nach einer Deckel fp4 aus? was für eine Fräse hast du da denn und was für eine Steuerung?

So the one thing that remains for me to ask is, why you refrained from using an MK5 to SK40 Adapter? I assume clearance or just personal preference?

i just found a similar head at work , probably UPA6 because it's bigger , on an 50 taper . I'm not sure on the connection type . Could be integral 50 taper , anyway.... it's an older 50 , it's not sk50 , but luckily i also found a an sk50 to old 50 taper adapter , didn't even know such thing exists .... . I have not used it so far , but it's a monster for sure , about 15-20kg . I'm sure it's used , but everything looks so well made . I have a question : this boring head has a course pitch adjustment , on one end , how can you make that rotate . Mines seem stuck . And it's a pain to adjust only via the 0.01 fine adjust .

how round was the bore and was there any taper in the walls, though...

I have a UP 4 with an NMTB 40 Shank but want to go to a NMTB 50. Will the NMTB 40 Come Out or do I have to machine Something like you did

what happens when the travel for the facing mechanism runs out of travel? will it just run out of travel and spin freely or does it rip your arm off xD

Ow, and another question (to both Roetz 4.0 but everyone else as well). I'm still very new to metalworking so forgive my ignorance for the following question. But is there a specific reason (or perhaps even several?) why it would be preferable to use a boring head to bore out a hole to a certain diameter instead of doing it in the lathe and boring out the hole with a regular tool bit to that same specific diameter by adjusting the cross slide outward from the axis of the workpiece?

Imma need an explanation for how that does facing too.

Did you mean Restoration, or Restaurant?

Moin, dass nenne ich mal einen Männerspielplatz! :D Was für ein Reinigungsmittel hast du am Anfang in der Waschkabine verwendet? Das hat ja eine unheimlich gute Reinigungskraft.

Ну и в чем смысл этого видео? Посмотрите, как я умею полировать коту яйца? Ни принципа работы механической подачи, ни вообще рассказа об устройстве расточной головки. Потешить своё самомнение и только. Отстой.

Man, if I was you, I would use rubber gloves at 1:28. Chemicals on your bare hand can lead to dermatitis and other skin rashes that will dry up the cells earlier in life, leading to premature ageing, cracked skin, blotchy hands (Palmar Erythema) and many other ailments leading to itchy hands. The fumes are also dangerous for your lungs. Why I say this? Because I am one of those careless fools who though I had steel hands until the 'acid' set in and I suffered 17 years as Mr Scratchy. Once the itch starts it spread to other parts of the body. So, keep using bare hands while washing your babies for now. Tomorrow you'll see.