Milling on a Lathe with a Vertical Slide

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Milling on a Lathe with a Vertical Slide

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  • #542596
    William Harvey 1
    Participant
      @williamharvey1

      Hi,

      Does anyone have any experience in converting a Lathe to Mill using a Vertical Slide? We have a Warco WM180 which I am only just starting to use but can see the benefits of having the ability to do some Milling actions.

      I have been watching some of Ade's Workshop videos and in Shed Talk 11, he shows how he made an adaptor to take vertical slide.

      Does anyone here have any input on this on how to achieve this, what slide to get, what other tooling we will need etc.

      Many thanks

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      #20268
      William Harvey 1
      Participant
        @williamharvey1
        #542598
        Oily Rag
        Participant
          @oilyrag

          Get a Milling machine!

          Lathe mill systems are awfully limited in what you can hold.

          Martin

          #542603
          Mick B1
          Participant
            @mickb1

            Warco sell several milling slides, but it's not obvious to me how you'd fit them to a WM180 – their most substantial one seems to fit WM240 and above.

            I have a WM250V and a Myford double-swivel slide that I use a lot. I use the adaptor plate Warco sell to fit the crossslide T-slots, modified to carry the Myford slide. Basically that meant 2 dowel holes and 2 M8 tappings. It's the work of a minute or two to mount or dismount it, including squaring up using the face of the chuck jaws against the vice.

            Solid carbide endmills of 8 – 10mm diameter are very good, removing metal easily with less sidethrust, and keep their edge for ages.

            Oily Rag's right about its limitations – you can flycut a surface maybe 140 x 60 mm – but so far I've been able to do anything the models I've been making have demanded. Plans to buy a milling machine keep getting put back whenever I manage to get round some issue or other.

            But I do wonder how you'd fit that to a 180 – the T-slots on the crossslide, and the cross feed that allows you cut slots, flats and steps under power were important in deciding to shell out for the 250V.

            boring reinforce.jpg

            Edited By Mick B1 on 01/05/2021 19:48:25

            #542615
            old mart
            Participant
              @oldmart

              If you only want to mill small workpieces, then go ahead. The milling experiance will be useful, and should you later decide to get a mill, then the milling attachment can be sold fairly easily.

              #542617
              JasonB
              Moderator
                @jasonb

                It is possible to do very limited milling with the workpiece held in the toolpost if you only need to move in two directions but a vertical slide makes 3 axis milling possible. As said the 190 is not the easiest to mount a vertical slide to but if you you can manage to fit one quite a lot can be done with one, all the milling for the traction engine in my avitar was done with a vertical slide so not that limiting but a mill would make things easier. Also worth remembering that the majority of the long established model engineering designs were almost all built with just a lathe and slide as many did not own a milling machine at that time.

                #542629
                Harry Wilkes
                Participant
                  @harrywilkes58467

                  I do not have a milling machine unfortunately I do not have room for one so all my milling is done on my Myford S7, yes it takes longer to set up and you have to be patient small cut's are the order of the day.

                  H

                  #542642
                  Mick B1
                  Participant
                    @mickb1
                    Posted by JasonB on 01/05/2021 20:23:13:

                    Also worth remembering that the majority of the long established model engineering designs were almost all built with just a lathe and slide as many did not own a milling machine at that time.

                    Thanks, I'd thunk that thought too – a lot of the established designs don't seem to need a large milling/jig drilling envelope.

                    There's also a kind of satisfaction in managing to think your way around limitations …

                    laugh

                    #542643
                    Frances IoM
                    Participant
                      @francesiom58905

                      there is not really enough meat in the WM180 cross slide – there are no T-slots tho I guess you may be able to drill & tap a few holes to hold a slide

                      #542649
                      IanT
                      Participant
                        @iant

                        I don't know the WM180 Bill but I started off milling in the lathe and still do so for some things when it suits my needs. What would I recommend?

                        Well for a start the most rigid set-up you can achieve, which in my book means forgetting swivelling slides – nice idea but rarely essential. My heavy (Chinese) vertical slide attaches to my S7 cross-slide (via an adaptor plate) and if there is any give, it's in the cross-slide – not the slide. For some items that don't need vertical adjustment once set-up, a simple angel plate will often be sufficient. I have a very nice solid 'V' angle plate that I use. The work can be set to the required height by packing, screw-jacks or sometimes just by eye.

                        The other thing you will need is a secure way to hold the cutter. The cheapest option is a single-size collet-holder but I'd get an ER chuck and use that. Mine are ER32 and they get used a lot for work-holding too.

                        So if you don't have the money, space or real need for a mill, then there is usually a way to do the work on the lathe. It might not be as quick or as convenient but for some folk that's not a problem in practice.

                        Regards,

                        IanT

                        Milling NS Frames 2 - mar 11.jpg

                        Sentinel slot drill setup - 230115.jpg

                        #542682
                        Bo’sun
                        Participant
                          @bosun58570

                          Good morning William,

                          Warco have a small milling slide that fits in the tool post which might suit your needs. But be mindful that it won't be overly rigid. They also have a base plate for the WM240/250 that takes a larger milling slide. It may be possible to adapt it to fit the WM180 cross slide.

                          I've had perfectly acceptable results from the milling slide on my WM250, it's just a nuisance to set up, and even more of a nuisance when you revert back to turning, only to find you still have another milling operation to complete. Also, compared to a milling machine, workpiece visibility can be a little restricted.

                          #542691
                          Nigel McBurney 1
                          Participant
                            @nigelmcburney1

                            I did nearly all the milling for a 1 1/2 in Allchin traction engine on a Myford using the swivelling vertical slide,myford machine vice,largest Myford angle plate and occasional an eclipse angle plate bolted to the cross slide, most of my milling was done with various home made fly cutters which cost nothing,slot and end mills were held in the new Burnerd 3 jaw,no eER systems in those days,and this set up did a good job and the satisfaction was being able to do it all at home. My day job then was in a toolroom where we had a brand new Deckel FP3 mill cost £5k in 1967,and home jobs were an absolute no no.

                            #542707
                            William Harvey 1
                            Participant
                              @williamharvey1
                              Posted by Oily Rag on 01/05/2021 19:22:08:

                              Get a Milling machine!

                              Lathe mill systems are awfully limited in what you can hold.

                              Martin

                              I know but cannot afford one TBH

                              #542709
                              Andy Carlson
                              Participant
                                @andycarlson18141

                                If you lack a collet holder then chuck a pece of bar end roughly double the diameter of the cutter in the 3 jaw. Make a punch mark to align with No 1 jaw, tailstock drill to the cutter diameter and then remove and make a saw cut opposite the punch mark. Then your cutter will be repeatably concentric. Worked for me as a stop gap until I had a collet holder.

                                #542715
                                William Harvey 1
                                Participant
                                  @williamharvey1
                                  Posted by IanT on 01/05/2021 22:44:28:

                                  I don't know the WM180 Bill but I started off milling in the lathe and still do so for some things when it suits my needs. What would I recommend?

                                  Well for a start the most rigid set-up you can achieve, which in my book means forgetting swivelling slides – nice idea but rarely essential. My heavy (Chinese) vertical slide attaches to my S7 cross-slide (via an adaptor plate) and if there is any give, it's in the cross-slide – not the slide. For some items that don't need vertical adjustment once set-up, a simple angel plate will often be sufficient. I have a very nice solid 'V' angle plate that I use. The work can be set to the required height by packing, screw-jacks or sometimes just by eye.

                                  The other thing you will need is a secure way to hold the cutter. The cheapest option is a single-size collet-holder but I'd get an ER chuck and use that. Mine are ER32 and they get used a lot for work-holding too.

                                  So if you don't have the money, space or real need for a mill, then there is usually a way to do the work on the lathe. It might not be as quick or as convenient but for some folk that's not a problem in practice.

                                  Regards,

                                  IanT

                                  Milling NS Frames 2 - mar 11.jpg

                                  Sentinel slot drill setup - 230115.jpg

                                  I have been looking at the items required to convert for milling and think I need the following:

                                  – a vertical slide

                                  – some method of clamping items to the slide

                                  – some method of holding the cutters in the lathe

                                  A vertical slide on eBay for around £50
                                  Warco don’t do an adaptor for the WM180 but Ade made one (with the capacity to swivel, in the video I linked)

                                  Maybe this Warco set will fit? It does not say which models it is for? I have emailed Warco.

                                  I can see Warco and others sell the EN25 Collet Chuck for their Lathes (with or without an adaptor plate for the headstock)

                                  I’ll then need some EN25 collets and suitable cutters (when buying cutters what shank do I need for collets?

                                  Ao many questions, sorry

                                  #542716
                                  noel shelley
                                  Participant
                                    @noelshelley55608

                                    One other option is an AMOLCO or similar milling attachment. Not cheap but they work and can be adapted to suit most lathes. The AMOLCO has a 2MT spindle and myford nose thread so cutter holding options are many. 2MT collets or 2MT/ ER25 collet holder, both with a drawbar. Arc could supply all you need at a reasonable cost.Noel.

                                    Edited By noel shelley on 02/05/2021 11:33:05

                                    #542724
                                    Andy Carlson
                                    Participant
                                      @andycarlson18141

                                      Can't help with specific attachments for your lathe, but do consider HSS cutters – they are more forgiving of the lack of rigidity inherent in a lathe milling setup. After initially being blinded by the multiplicity of cutter options and then promptly snapping a tooth off a fancy specialist carbide one I decided to road test a 10mm stub length HSS cutter in the lathe. It works a treat. IIRC it was from Drill Service Horley.

                                      #542729
                                      AJW
                                      Participant
                                        @ajw

                                        I motorised my Myford VMD milling attachment and mounted it at the rear of the lathe bed as I got tired of fitting/removing it.

                                        Yes an independent milling machine would be great – if you can allocate the space!

                                        My album 'Myford VMD' has a few photos showing some details.

                                        Alan

                                        #542736
                                        IanT
                                        Participant
                                          @iant

                                          Hi Bill,

                                          That vertical slide looks about the same size as the one I have for my 2.5" EW. The one I was referring to is probably twice as big.

                                          As with most things here, there are different experiences and opinions. I don't know what work you are planning to do – or how often you intend to do it. My parts are generally small and I do have a choice of machines available. But I'll try to give a bit more detail on my experience in this area.

                                          Do you need to make vertical height adjustments whilst machining? Some operations (drilling, slot milling, edge milling/fly-cutting) often don't – and if the work can be correctly positioned and the right tool fitted – then a vertical slide might not be required, indeed a heavy angle plate might be better. If you know the 'bed to centre' and 'bed to top of cross-slide' measurements, then you can set work either on (or off) the lathe fairly easily. Packing blocks can give simple work height adjustments too by removing or inserting blocks of known thickness. Slip gauges are not required!

                                          Apart from rigidity, there is another reason I don't feel 'swivels' work for many vertical slide operations. My large slide came with a rotary base but I soon discovered that most times I needed the actual table to overhang the cross-slide. This is because otherwise the slide's table will be mostly above the lathe centre height – and things like vices make lack of travel even more of a problem. Hanging the sliding face over the edge of the cross-slide really helps but also limits any use of a swivel. So I replaced my rotary base with a plain adaptor plate to match the vertical slide with the cross-slide, whilst giving a more secure mounting. Same for my EW slide.

                                          So in summary, you can certainly mill in the lathe without a vertical slide and 'swivels' may not be as useful as they first seem (think of a vertical mill and it's table – generally the table doesn't swivel!)

                                          If you have a simple milling job to do, why not try doing it with what kit you already have? Clamp the part in a tool-holder or on an angle plate if you have one. You could hold the milling tool directly in your 3-jaw but better to make a simple round tool holder (in mild steel – just drill or bore it and fit a grub screw). The chuck will grip the mild steel much better than the hardened tool and the grub screw will hold the tool if a small flat is ground in it.

                                          Then have a go. Small cuts and slow feeds, saddle locked and with the gibs on the tight side. It may not be perfect but it will give you some idea of what is possible with patience and practice. You may decide it's not going to work for you – or that it's perfectly good enough. Either way it will help you decide what is best for your needs.

                                          It might even be fun trying too!

                                          Regards,

                                          IanT

                                          #542756
                                          Mick B1
                                          Participant
                                            @mickb1

                                            Not quite milling, but here's a job made a lot easier with a swivel slide:-

                                            img_20200508_124909.jpg

                                            I think it was a wing-mirror bracket for a classic car. Came out about 53 degrees – extrapolation because I'd run out of graduations on the swivel base.

                                            To 're-tram' – set back square to spindle – all you have to do is open the chuck till its lower 2 jaws are as far apart as to span the fixed vice jaw, retract the crosslide, swing back the swivel and bring up the saddle till vice's jaw contacts chuck's, tighten swivel nuts and you'll be within a thou or two. Lot easier in this case than retramming a swivel mill head.

                                            Need the vice jaws parallel to spindle? Grip a stick of stout silver steel in the chuck, swing the vice and retract the crossslide till the SS touches all across the bottom of the vice gape, approaching carefully and rocking vice to feel for clearance when you think you're close.

                                            I'd like a mill, and may eventually find cash and space for one, but I bet I'll still be using the vertical slide a lot!

                                            Edited By Mick B1 on 02/05/2021 15:38:04

                                            #542784
                                            Dr. MC Black
                                            Participant
                                              @dr-mcblack73214

                                              I used a vertical slide on my Taig (Peatol) lathe to put slots into steel angle to build a rest for my bench Grinder.

                                              I will add a photograph if I am able to discover how to do so!

                                              If I fail (and if anybody is interested), please send me your email address OFF-LIST and I'll send it.

                                              With best wishes.

                                              MC Black (Dr.)

                                              #542786
                                              William Harvey 1
                                              Participant
                                                @williamharvey1
                                                Posted by IanT on 02/05/2021 12:33:05:

                                                Hi Bill,

                                                That vertical slide looks about the same size as the one I have for my 2.5" EW. The one I was referring to is probably twice as big.

                                                As with most things here, there are different experiences and opinions. I don't know what work you are planning to do – or how often you intend to do it. My parts are generally small and I do have a choice of machines available. But I'll try to give a bit more detail on my experience in this area.

                                                Do you need to make vertical height adjustments whilst machining? Some operations (drilling, slot milling, edge milling/fly-cutting) often don't – and if the work can be correctly positioned and the right tool fitted – then a vertical slide might not be required, indeed a heavy angle plate might be better. If you know the 'bed to centre' and 'bed to top of cross-slide' measurements, then you can set work either on (or off) the lathe fairly easily. Packing blocks can give simple work height adjustments too by removing or inserting blocks of known thickness. Slip gauges are not required!

                                                Apart from rigidity, there is another reason I don't feel 'swivels' work for many vertical slide operations. My large slide came with a rotary base but I soon discovered that most times I needed the actual table to overhang the cross-slide. This is because otherwise the slide's table will be mostly above the lathe centre height – and things like vices make lack of travel even more of a problem. Hanging the sliding face over the edge of the cross-slide really helps but also limits any use of a swivel. So I replaced my rotary base with a plain adaptor plate to match the vertical slide with the cross-slide, whilst giving a more secure mounting. Same for my EW slide.

                                                So in summary, you can certainly mill in the lathe without a vertical slide and 'swivels' may not be as useful as they first seem (think of a vertical mill and it's table – generally the table doesn't swivel!)

                                                If you have a simple milling job to do, why not try doing it with what kit you already have? Clamp the part in a tool-holder or on an angle plate if you have one. You could hold the milling tool directly in your 3-jaw but better to make a simple round tool holder (in mild steel – just drill or bore it and fit a grub screw). The chuck will grip the mild steel much better than the hardened tool and the grub screw will hold the tool if a small flat is ground in it.

                                                Then have a go. Small cuts and slow feeds, saddle locked and with the gibs on the tight side. It may not be perfect but it will give you some idea of what is possible with patience and practice. You may decide it's not going to work for you – or that it's perfectly good enough. Either way it will help you decide what is best for your needs.

                                                It might even be fun trying too!

                                                Regards,

                                                IanT

                                                Ian – thanks for a very comprehensive, thought provoking reply.

                                                TBH I have no idea what Milling Operations I'll be doing as I am only just starting out learning how to use the Lathe e.g. I don't know what half of the parts are called or which cutters are for which job. Although in my first go I did manage to make this tool, even knurled the handle

                                                So based on the info so far and the fact that I have no idea what I am doing, I think the cheapest option would be the best so that I can cut my teeth and have a go.

                                                So forget the Swivel Slide and opt for:

                                                – Heavy Angle Plate

                                                – Clamps – not sure what I'd need

                                                – Some HSS Cutters

                                                – Home made Cutter Holder

                                                Angle plates – I need to work out which would be best and offer the largest working area. There are so many different types to choose from ????? Also found this in a search from Chronos (who I have bought some tools before – decent quality I thought)

                                                Clamps – Again need to work out what I need and I guess this could depend on the Angle Plate?

                                                Cutters – Depends on what type of milling – but again I need to research what I need for various tasks?

                                                Iv'e only been on here a day and I've already learnt so much, so thanks to everyone's support.

                                                One job I would like to try, is cutting a recess in the area of a valve seat on a cylinder head. This needs to be done with a Fly Cutter, but I don't believe I'd be able to get the cylinder head bolted to an angle plate on the lathe and even if I did I doubt I'd be able to get at all the valves, maybe if I moved the backing on the Warco back (as I have seen Ade do to stop aluminium swarf wrapping around the head stock )

                                                #542804
                                                Andy Carlson
                                                Participant
                                                  @andycarlson18141

                                                  Milling clamps… how long is a piece of string? Really depends on the job and your ability to problem solve. Certainly sthe type with studs, 'T' nuts, step blocks and so on are useful on some occasions but they are not the answer to everything. Sometimes you need studs and a piece of thick enough bar drilled to clear the studs to form a strap across the job. Sometimes a vice is best. Harold Hall's site has several designs of low profile clamps fo you to make. As others have said, sometimes you can co-opt the toolpost stud to help with clamping. The general rule is probably that you never quite have what you want.

                                                  One of the challenges of milling in the lathe is that you have a lot less free 'T' slotted (or whatever) space in which to put your clamps. Quite often I find that this precludes the use of step blocks. Gravity as another challenge – on a mill you can set up on the table at your leisure. With a vertical slide or angle block everything will fall off so you need to set up off the machine.

                                                  TBH I think that the many piece clamping sets are overkill – yes you get lots of bits but they are all of a similar type.

                                                  Start simple, take things slowly, learn what a healthy milling cut sounds like and how much 'demand' your setup can cope with. Be careful – I generally assume that a milling machine (or lathe doing milling) is always trying to damage itself, the job and/or me. Try to figure out how many ways it will find to trip you up – for example apart from flinging the job across the workshop the cutter can work like a corkscrew and either pull itself out of the holder and into the job or else pull the job in towards itself.

                                                  #542866
                                                  Nigel McBurney 1
                                                  Participant
                                                    @nigelmcburney1

                                                    a long time ago Myford offered two vertical slides,one fixed one swivelling, at the time I chose the swivellig type as it had a larger table,I found the main problem was the single bolt clamp, later on the two bolt clamping was introduced.

                                                    #542867
                                                    Peter Baverstock
                                                    Participant
                                                      @peterbaverstock32334

                                                      Have a look at Steve Jordans videos on you tube,he has a particularly good set up for his chinese lathe.

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