Two Chucks 

I have been a tool room machinist since 1976. The idea of having a rotating chuck opposite the spindle is a great idea. This greatly expands the machining options. This idea can be applied to all larger machines. Thanks for sharing your idea.

I was just passing by and thought I'd give you a couple of minutes. Now I'm a subscriber. I get great pleasure watching old fashioned skill with a large dose of ingenuity, coupled with a gentle, low voltage presentation. Well done Sir. Greetings from Australia.

Excellent project, not only do you have the ease of setting up the four jaw, but you have the possibilities of a tail mount chuck. An added benefit of spreading your work over a larger part of the ways, for anyone who has a very old lathe with all the past wear near the head stock. Enjoyed, cheers!

utterly mesmerizing, fantastic craftmanship!

Wish you had been one of my teacher's when I was actually interested in school your humorous commentary made me laugh😆😆😆😆😆😆🤗🤗🤗

Stunning work. So wonderful to get clear, concise, explanations, as you go. Thank you for sharing it with us. I would love to see a walk around the shed. Tom Melb Aust

Beautiful job. Love how you go from vision to actual item and explain the process. Glad I found your channel. You deserve a lot more subs. Thanks for sharing.

A fascinating solution to a common problem, thank you for a very enjoyable build .

Wonderful!! Thank you so much for all the work you put into these videos!

Excellent work. Planning, explanation and executed in total precision. Thank you. 👏

Excellent work, that was a very involved project, great modification and addition to the shop. Thanks for sharing.

You most feel like a proud papa w/that creation. The many ways that can be used is incredible.

Fantastic Paul!....You have greatly increased your workshop possibilities. Keep these inspirational videos coming(love em)...Kevin.

I enjoyed that! great content and excellent execution of the project. your videos are getting better and i look forward to them. Thanks for sharing its appreciated.

Brilliant idea and very good executed. Excellent.

Beautiful. A job meticulously done.

Love your videos and your engineering .. if you were my neighbour I'd be the little boy (44 years old) who would watch and ask a million "why" questions .. very much appreciate you sharing your knowledge

Wonderful to see a proper engineer at work. Who can machine and measure using mics, vernier, dti etc. Which is called the old fashioned way now.

That was excellent, learned some things and enjoyed watching it come together.

A very interesting video with a lot of skill and ingenuity .

im soooo glad i discovered your channel. cant wait for the next vid. i love building machines to solve problems, and walking roud srap metal dealers, not only to find treasure but also look at how others solved the problem

Hello Paul, A very useful addition to your workshop and a nice design to make it reversible... I feel sure you've sparked the imagination of many of your viewers... Take care. Paul,,

Huge amount of work there, most impressive !

Good project , excellent workmanship, big like.

Congratulations on passing 10,000 subscribers ! Well deserved mate,keep up the good work !

That's a very creative solution. Nice work.

Nice build, looks very capable!!👍

Du très beau travail comme on aimerait en voir tous les jours !!!! Extraordinaire !!!! Very good work as we would like to see every day !!!! Extraordinary !!!!

Brilliant! I have just found your channel, thank you for sharing it.

How do you get to be so clever? This so good to watch, thank you.

Excellent work, thank you.

Nicely done and great idea. I wish I can buy something like this, don't have the skills or the equipment to make one but I can see it being very handy.

You’re a machinist’s machinist. Though I’m 67, I would sign on to be your apprentice any day.

Delightful to watch. Thank you very much.

Una idea brillante felicitaciones maestro.

Wonderful work, I struggled to make a 4 jaw chuck mounting plate ( I have the same bolt spacing as you do with my Emco V10 ) let alone make a bearing that is spot on center with the spindle. Pleasure to watch

very cool project

beautiful job perfect

On an older lathe, that will help keep the carriage off of the more worn areas of the bed. On a new one, it will (or should) wear more evenly. I've seen one or two use something like that for doing critical work on an older, worn, lathe. Someone might consider designing a castings kit that could be machined to fit the popular older models. You know how some like their heavy cast iron.

Nice!!! Given me a few ideas - although changing chucks on my small lathe is not such a big deal, same system as yours but more space for fingers. I bought a front-mounting 4 jaw chuck that I can also use on the mill, intend to buy a similar 3 jaw chuck when funds permit. Then I'll drill out the spindle back plate and fit thread inserts so both chucks can be easily front mounted.

wouaou reaiy good idea!!!! i have to learn e lot !! theng you !!

nice work mate

Great idea!

Nice job, made me glad I have a camlock spindle though. Those outer races aren't going to move any time soon with 638 on them! :-)

Nice machining job, changing chucks on the Chinese lathes is a little tedious. However, for smaller jobs where I need a four jaw Chuck I mount a small one on the three jaw chuck and for most purposes works fine.

Nicely Done. Peter Sweden

Brilliant!

Really nice. I have a question doe, how can you grab a totally cantered par with a 3 jaw chuck? I thought they always have a little bit of run out because of how they work. Would this run out cause the headstock bearings to fight with the adapter bearings?

That or I banged me head at some time. Lol. Brilliant.

Brilliant, maybe a couple of Oring grooves to eliminate dirt entry in your locking nuts

awesome!

A beutifull build. Did you think sbout driving the 4 jaw via the head morse taper to eliminate the efects of runout in the 3 Jaw?

Incredible work but I can't help thinking it might have been easier to just buy a second lathe! lol.

Love this channel. You never know what’d they think of next. I wonder what was the white liquid you squirt on the work, baby formula?

I'd very much agree that a D1 series quick change on the spindle would have been a much better choice by the manufacturer. But with the design of lathe chuck mounting that your lathe came with, many don't seem to know there's two separate and distinct set ups that use the same stud and thread sizes and on the same PCD for the chucks and face plates. For some reason most of the UK does seem to use the simpler set up where you have to fumble with the nuts and washers in a space hardly big enough for your fingers. And this chuck mounting system is actally fairly old with even it's own German DIN designation. I believe at one time even Emco used this exact chuck mounting design on there lathes.Both my Asian lathes are just about the same as what you have, but still slightly a bit different than yours. My spindle flange is drilled large enough the nuts stay on the studs and can be passed through the clearance holes in that front spindle flange. Behind that face flange on the spindle there's a large fairly thick knurled ring with curved slots and what looks to be loose fitting rivets so that ring is captive but can still be partially rotated. That ring also has 3 key slotted shapes in line with the clearance holes that are through that front spindle flange. In use and to remove the chuck, you slacken all three nuts a bit, that allows you to then rotate that knurled ring to there nut clearance position and slide the chuck off. To mount the chuck you start the nuts on the chucks mounting studs, slide the chuck onto the spindle register with the nuts and studs lined up with those through holes in the spindle face and ring with those key shaped holes. Once the nuts clear the rear face of that knurled ring, rotate it that partial turn so the narrow area of those key hole shapes are up against the side of each stud. That face of the ring is then used as a one piece washer for the nuts to tighten against. Then just tighten the nuts. A chuck change takes me about one minute. I'd be very surprised if the manufacturer didn't offer and have replacement spindles in stock for your lathe with this improved design. Both my 10" swing Seig C6 lathe and my 11" swing Weiss branded machine use this exact set up. When I was ordering that 11" lathe I learned through the dealer that most off shore machine tool manufacturers do have multiple available factory options the tool dealers like Warco in the UK, Grizzly Tools in North America etc can pick and chose from. I was able to order for example mine with a MT 3 tail stock taper and a rear mounted milling head and column that came with a R8 taper. Both options at that time weren't usually stocked and both the tail stock and milling heads normally had MT 2 tapers when buying from most tool suppliers in my country. So if your having to work that hard and long just to change chucks, maybe see if you can upgrade your spindle with a factory replacement part.

Very nice work there. A lot of planning must have gone into the sequence of operations to get the final product truly concentric. Is your boring bar just clamped in at the chuck end or does it run in a bearing? Some pictures of the boring bar set up would be nice.

Alan Milyard likes his hacksaw!

Far superior to the idea of a chuck mounted in the tailstock IMO. I've thought about a steady rest with a cat head that turns in a bearing concentric with the lathe spindle. To save space a 4 point QJ bearing sounds workable. While they do not like sustained high speed they are very rigid both axially and radially. We used them on centrifuges for waste treatment plants to take the axial load of the internal conveyor that pushes the cake out.

Do you calculate your feeds and speeds when milling or do you just go by experience and by just knowing what to set it at ?

Brilliant

Good idea

Hi, what is the milling machine, plese tell me that it's a Nu-tool 12 speed? cheers P

Brilliant solution, I've seen it done on large lathes before, but never on the small the small import ones.

Flux capacitor next Paul? Very enjoyable, thanks for sharing, Cheers

ingenious. Only missing a morse taper in the spindel so you could insert a morse taper collet chuck too ;-)

Watch out for those red jumping maggots....deadly.

Did you consider chuck cam studs? Probably an easier mod.

as an open minded person, this is a unique solution, lot of very well done work, did you get the answer you expected?

👍👍👍

Howdy! I'll say this only once: It DOES NOT MATTER how accurately you "think" you have aligned the main spindle and your "auxiliary" shaft... If you do not provide a flexible coupling between the primary shaft (machine spindle / main chuck) and the "auxiliary" shaft / second chuck, there will exist MASSIVE forces in all three axes, which, over time, will cause accelerated wear and stresses on the components. You are free to doubt me, but you do so at your own peril. Good luck, in any case... Cheers, Dave ETA: If you doubt my statements, do a little research into shaft couplings and limits of precision in alignment of independent rotating machines. 'Nuff said...

very nice video bravo

322👍. 86 comments Bravo !

Donkey's ear 100% Great

ACE

you could have welded and trapanned the supports together then separated them

Hey mate, why not just turn it on live centers like they used to, eh! No mistakes.

Eat your heart out CNC men.

Brilliant!

Brilliant!