What lathe/mill - advice please.

Hello Keith, Appreciate your comments. I've been agonizing over lathe and mill for the last year or so. As you say the cost of equipping a Colchester/Harrison is off putting to say the least. We are so far out in the sticks. All of the known dealers are 200+ miles away. JS has kindly offered to help me source a BP. If there's one person I would trust it's him.

I was pretty impressed with the standard of finish of both Warco and Chester, but there is always that nagging doubt. I'm not too worried about external appearance, but do want to be absolutely sure that the machine will turn accurately and produce a good finish. What's your experience with the 600?. If I could afford an Emco I wouldn't hesitate but . . £15K :-(

I've managed to get the wheels - 17.5 & 12" and flywheel- 12" - machined, but still need to do the diff at 13", What's the BH like to change speeds. The reason I'm thinking at the 900 or 1232 is the longer bed, as the Emco tailstock always seemed to be in the way. If my memory serves me none had tee slotted top slides. I can remember asking about a rear toolpost and being advised that it would be OK to drill and tap the cross slide to fit one.

Cannot afford to rush into this. Cheers Geoff

keith , re your bridgeport , i'm picking one up tomorrow with a flat be

transit , you mention "in pieces"any suggestions how to lift it off pick up using a local skip firms vans overarm thingy ? and how much o a job is it to remove the table ? to add to the thread , :rolleyes: i your'e buying a machine ,buy second hand british

-- willowkevi

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Is that for the BH600/900? Is a rear toolpost a desirable thing?

Brenda

-- anotheri

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Hi, sorry nearly missed your post I'm running about like ... well you know what. I didn't actually take it apart John did that but he has detailed his methods for moving here:

Best regards

Keith

Geoff, totally agree having met John a couple of times and bought the Bridgeport from him I would say he is the LEAST "cynical trader" I have ever met. I never buy anything unseen but would happily make an exception with John, if he said something was OK the money would be in the post. Good luck with your search.

Geoff, this is a difficult question for me to answer, in truth the machine does everything that I ask of it and does it well, it is not however a machine that I have fallen in love with. The BH600 after setting it up is certainly accurate and with a light finishing cut mine turns parallel (as accurately as I can measure but certainly within a couple of tenths) over 8" or so (longest I've done). I've struggled a bit with the dual dials but have now got used to the feel and can set them consistently. Just a matter of practise and consistent viewing angle I suppose. With a bit of care I can achieve a very good finish which easily matches that of my Boxford. Small diameters are a bit of an issue as the top spindle speed is only 1200 rpm, doesn't affect me as I have a smaller lathe but could be a trial if you spend a lot of time trying to get glass like finishes on 1mm brass. As soon as SWMBO approves I will swap the motor for a three phase and VSD, the ability to do that was the main reason I went with the quieter belt drive rather than the gear head. Changing the belt is OK but a little heavy, I use a bit of webbing to lift the belt from pully to pully and this makes it easier. I tend to run the belts a little loose to protect the machine against my stupidity.

In hobby terms the machine is heavy and ridgid but of course if you compare it to the 6" Colchesters and Harrisons etc it is possibly a tad lightweight. Although I have worked it hard on occaision I have never had a problem with rigidity or vibration. All in all, it has certainly proved to be superb value for money and a very reliable (mine is 5 years old) and accurate machine. Once you get used to the workmanlike feel and accept that it is no Schaublin you can get on with enjoying the =A315K or so that you didn't have to spend.

Mine is not the gap bed version so I would not be able to accomodate the 13" for the diff, I believe that the newer models BH600G are all gap bed and so you would be able to handle this sort of size and more as long as it is short enough to fit in the gap.

I haven't felt this myself but I have a long bed Boxford for this type of work so don't stretch the capacity of the BH600.

The BH600 has a tee slotted cross slide (mine has two slots) that will allow the mounting of a rear parting tool. If I remember correctly Anthony Mount in his series of articles cut a third slot further out towards the end of the slide. I have used rear toolposts regularly on the Myford but eventually bought a "Q-cut" type parting tool from JB tools and this solved all of my parting problems. If you wanted to mount a rear tool post outside of the tee slots there is certainly room to drill and tap the cross slide.

Hope this is not too long winded Geoff and hope it helps a bit, I suppose that the answer is that it has proven to be a fine lathe but not the best that (lots of!!) money could buy, but then I haven't got lots on money.

Best regards

Keith

Totally agree, John S. has helped out many over the years and is a source of much knowledge and information.

Peter

-- Peter A Forbes Prepair Ltd, Luton, UK snipped-for-privacy@easynet.co.uk

Just a thought, I used to have a Town Woodhouse turret mill which was a nicely made machine just a bit smaller than a BP although more solidly built. All pretty long in the tooth now, and don't turn up very often, but worth a look if you see one of the later ones with back gearing & 30 int spindle. Mine had a 6" raising block, which was A Good Thing, but without that you wouldn't have a height problem.

Cheers Tim

Dutton Dry-Dock Traditional & Modern canal craft repairs Vintage diesel engine service

Hello Keith, Thanks for the reassurance about accuracy, Always good to get first hand experiences.

Wasn't sure.

slot further out

Must read his articles again.

"Q-cut" type parting tool from JB

Another first hand experience. Seen them advertised, but after jam-ups in the V10, I'm sceptical to say the least about parting off. Resorted to the old hacksaw - ducking behind desk! So rear parting off now no longer needed. Was thinking of doing a QC rear toolpost similar to Myford, as well as one for the tailstock. I've tried those capstan type tailstock toolholders in the past, but like 4-way toolposts, a real PITA.

This is exactly the type of feedback I was hoping to get. Thanks Keith Geoff

JS may have found a BP for me. Should know next week. Fingers crossed that it will fit! Geoff.

Geoff Hi, I still think a rear mounted toolpost is useful particularly if you have a "production run" of parts saves tool changing (even quick ones). I stuck with 4-ways for a number of years and then tried one of the "economy" import QCTPs which was OK but didn't really light my fire. I then bought a Dixon for the Myford and the repeatability was a revelation, it is now a permanent fixture on the lathe.

When I bought the Boxford my first thought was I will just buy another but finances weren't brilliant, particularly as I see no use for the thing unless you have a reasonable number of holders. I built one of John Stevenson's design QTCPs and it works extremely well. It is detailed here

Not too long till the Warwick Exhibition now Geoff so I hope you are successful in finding what you want. I hope to go myself again this year but at the moment I'm stuck in deciding which of a vast list of "essential" items that I need most. Spent a day looking round the recent Bristol event, saw some superb models/engines but didn't buy anything except lunch, must be losing my touch.

Best regards

Keith

re john s's bridgeport moving guide . it works a treat !ive just rebuil

mine today in the shed after picking it up on thursday

-- willowkevi

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Hello Keith, Thanks for the long reply.

Agree. Was thinking mainly of parting off from rear toolpost, but your experience using the Q-cut has given me encouragement.

I made a 4-way soon after getting my lathe, but it only lasted a couple of months and landed in the oddments bin because I stabbed myself so many times. Coughed up the needed and bought a Dixon. What a difference. Lathe work became a pleasure. Can never see me without one or equivalent again. Similar to power crossfeed.

Interesting modification. Will print and study the drawings.

Why is John's more convenient? Easy to make holders is inviting, as Dixon ones are £15+

Regarding the BH range, I've just read the Anthony Mount series. Either I did not register when I first flicked through or just plain forgot, but the clutch he made for his has just about sold the lathe for me, what with your experience. He certainly made some interesting mods/changes/additions. Must find out if those dividing head casting are available. Unless a colchester comes along. Thought I had one, a Triumph, until I was told the length - nearly 8ft. JS had found a BP, but again just to big.

Just got back from a good steaming afternoon at the Norwich club. Ah the smell of steam, oil and smoke. Addiction revitalized after a 20 year layoff. Geoff

You must have a big shed. Had to turn down the one from JS as it is just too big. I would loose so much space. Pity. Geoff

Geoff hi, the piston type I have is operated by two levers at the top on the same axis. The lower one is longer and operates the tool holder locking piston and the shorter upper one locks the whole block to the topslide. This short one needs a good thump with the hand to provide enough locking force and consequently quite often when you operate the longer lever to unlock the tool holder the whole block rotates - really annoying. I know that you often have to rotate the block anyway on a tool change but the constant thumping makes my hand sore (softy really) and I don't like hitting expensive tooling even with a soft hammer. I'm also constantly getting the two levers mixed up when I'm in a hurry and more than once have tried a cut with either the block or holder loose. I suppose that I would get used to it eventually but with John's design the two actions are well seperated and different.

Pity Geoff as it is a very flexible mill for general work, bit lightweight for industry but ideal for us. There seems to be a bit of a gap between the VMC and the Bridgeport in size. I know that Warco and Chester do an 8" x 36" size machine for about =A33.5K but I dont think it is that much smaller in footprint. Both companies had one of these at last years Warwick exhibition but they don't seem to take them very often. Several people on here use the GH major/Super Major type and they seem to be OK. I don't know why but they always struck me as being "built to a price" although that doesn't seem to stop them working well.

On the secondhand market mills of this size appear few and far between. If they were built for industry and therefore heavier they all seem very limited in capacity. The Boxford VMC is well built but too limited in size for me, the Centec is a well regarded machine but they are all old now and good ones fetch silly money because anyone can fit them in their shed. Others that come to mind are the Tom Senior (same problem as Centec only more so) and John L down in deepest Wales (I bought a Boxford off him) has a Marlow which seems a useful size but not that common and can vary from being well specified to very basic. Of course there is the Emco that you have already had and other exotic toolroom machines, but this size seems to attract a major premium in the secondhand market.

It's funny how if you have a passion it never really leaves you, I spent many happy years flying model ac/helicopters but eventually went back to kit cars which were my first love. Always been interested in machining though and have had a lathe since I was about 22 (loooooong time). Considering the huge amount that I DON'T know about them, I must be a very slow learner.

Best regards

Keith

Town Woodhouse mill in gloucestershire here

Tim

Dutton Dry-Dock Traditional & Modern canal craft repairs Vintage diesel engine service