Crap vee blocks and “Oxford Precision”?

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Crap vee blocks and “Oxford Precision”?

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  • #304207
    choochoo_baloo
    Participant
      @choochoo_baloo

      I was about to order a pair of vee blocks (the unbranded far eastern type from Arc) and then watched a video showing how a pair of supposedly ground precision vee blocks, of the same style as that sold by all the usual retailers were

      (a) not ground on the vee surfaces

      (b) not even parallel along the tops as measured with a clock gauge on a surface plate. They differed by ~8 thou over the pair!

      What little optimism I had for using these import items has now gone out of the window.

      Therefore the purpose of this post is twofold. 1) What experiences do others have of import workholding and jig tooling such as vee blocks

      2) I was pleased to find a what appears to be a quality British vee block pair https://www.cromwell.co.uk/shop/measuring-and-test-equipment/vee-blocks-and-clamps-steel/40x50x40mm-workshop-vee-blocks-c-w-clamps/p/OXD3702300K but I cannot find any positive Google result for the company "Oxford Precision" (Leicester). I want to ascertain whether they are indeed made in Leicester, or if it's a crafty bit of branding when they are also imports – like with modern Jacob's chucks. Will phone Cromwell tomorrow for an answer in any case.

      Thanks in advance.

      NB: Here's a shot from a manual form "Oxford Precision" that does turn up in search results.

      oxford precision

      Edited By choochoo_baloo on 26/06/2017 01:52:27

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      #33012
      choochoo_baloo
      Participant
        @choochoo_baloo
        #304208
        Enough!
        Participant
          @enough
          Posted by choochoo_baloo on 26/06/2017 01:52:05:

          I was about to order a pair of vee blocks (the unbranded far eastern type from Arc) and then watched a video showing how a pair of supposedly ground precision vee blocks, of the same style as that sold by all the usual retailers were

          (a) not ground on the vee surfaces

          (b) not even parallel along the tops as measured with a clock gauge on a surface plate. They differed by ~8 thou over the pair!

          Sounds like no attempt had been made to finish them. Since it seems pretty pointless to try to sell a product line like that, I'd have to assume that one or more operations had been missed on this particular pair but they had got into the supply chain anyway.

          Returning them to the vendor for exchange should have rectified the situation.

          #304217
          Chris Evans 6
          Participant
            @chrisevans6

            I do not believe Ketan would send anything out from ARC like that. Phone him first and save some money. I bought "Eclipse" vee blocks over 50 years ago and had to grind them to get a matching pair, then had to make a second clamp as they where only supplied with one. They are still in use though.

            #304218
            JasonB
            Moderator
              @jasonb

              My far eastern Vee blocks work fine for what I do, can't remember who they came from but probably Chronos or Tracy.

              My ARC 1,2,3 and 10,20,40 blocks, ER and 5C blocks and quite a few other imported items all work for me. Maybe that was just a bad example in the video, did it say who made them or were they just £4 direct from China?

              As the usual customers for the Oxford tooling will not be hobbiests but trade users they tend to have better things to do with their time than write google etc  reviews

              What sort of things are you intending to make as that would help people say if something may or may not be suitable for your intended use?

              Edited By JasonB on 26/06/2017 08:23:26

              #304223
              JasonB
              Moderator
                @jasonb

                I assume this is the video you are talking about.

                Interestingly looking through a couple of catalogues this type of Vee block tends to be shown with less accurate surfaces than the type you are looking at from Cromwell eg video type 0.0012" on teh vees but the cromwell type 0.0002" for expensive and 0.0005" for mid range

                #304228
                Muzzer
                Participant
                  @muzzer

                  What a silly, thoughtless post by the OP. You can indeed buy utter crap from "the far East" but you can also buy absolutely top notch stuff from there. Same with UK made stuff (if it really is UK made in the first place) – there is plenty locally made crap available too. Far better to sit back in your armchair and never spend a penny – that way you won't waste a penny either.

                  Why not buy based on reputation? That's how some retailers gain a loyal following, based on years of careful work, sourcing good quality parts and giving good customer service. If you've been on this forum for any time you will know that the retailer you mention consistently gets pretty good feedback.

                  Murray

                  #304230
                  Neil Wyatt
                  Moderator
                    @neilwyatt

                    A bit unfair on Arc, that is a common design of v-block made by innumerable sources so why associate it with them and not someone else? Especially as I can't see that style on the Arc website…

                    They are available in all sorts of grades. I have a pair (I think from Chronos) and they are ground on all surfaces and have proved perfectly satisfactory for my needs to date.

                    I also have a pair of the style with detachable clamps, they are very well finished but they are too small for most jobs.

                    Neil

                    Edited By Neil Wyatt on 26/06/2017 09:04:37

                    #304232
                    Neil Wyatt
                    Moderator
                      @neilwyatt

                      If you look carefully at the Cromwell site the tools are 'Oxford' brand, there's always a full stop before the 'precision'.

                      They appear to be made in India:

                      http://www.indiamart.com/proddetail/oxford-standard-vernier-calipers-11049518248.html

                      Neil

                      #304234
                      JasonB
                      Moderator
                        @jasonb

                        Video uploading of my "Crappy" far eastern vee blocksdevil

                        #304241
                        JasonB
                        Moderator
                          @jasonb

                          And here it is.

                          Now you must allow for the fact I'm measuring on a porcelain tile, using an ARC indicator stuck on an ARC 1-2-3 block and the item I am measuring is an ARC milling cutter. God knows what the cumalative effect of all these far easten imports will bequestion

                          There is a bit of parallax using the camera, actually doing the test without trying to video it I get 0.0003" which as I said seems perfectly acceptable for the steam and IC engines I build, maybe if you are trying to beat Neal to be the first forum member to the moon then you may feel you need want something better.

                          #304249
                          Tony Pratt 1
                          Participant
                            @tonypratt1

                            Does anyone really think you will get a decent set of vee blocks for $15?laugh

                            Tony

                            #304251
                            Ady1
                            Participant
                              @ady1

                              At pig-in-a-poke prices I tend to buy one and if it's any good I buy more

                              Got three MT1 tailstock chucks this way, shockingly good quality at a tenner (a packet of smokes) a pop but you always take a risk if you don't go for the more expensive quality brands

                              #304253
                              Ady1
                              Participant
                                @ady1

                                Part of the fun of ME for me is improving anything which falls short of expectations

                                You're basically starting with an almost complete build dropped onto your doorstep, which you improve plus you learn at the same time

                                If you want 100% satisfaction from a buy then you pay commercial business prices for out-of-the-box commercial expectations.

                                2 cents

                                #304257
                                MW
                                Participant
                                  @mw27036

                                  I honestly believe the bad vee block video and they should never have said that it would be ground on all surfaces to within 0.001".

                                  The roughness of the surface isn't an absolute indication if something has been ground or not, it may only point to how coarse the grit used to grind it was.

                                  Also, how can he be sure that the pin he is resting on it is also as accurate? Is he not imposing an undue amount of leverage and tilting up one side of the pin using the indicator? 

                                  His indicator holder should have a heavy base as well like steel or iron, in order to provide the most stability, rather than float around like a jelly on springs. 

                                  Michael W

                                  Edited By Michael-w on 26/06/2017 10:58:16

                                  #304258
                                  Ketan Swali
                                  Participant
                                    @ketanswali79440
                                    Posted by choochoo_baloo on 26/06/2017 01:52:05:

                                    I was about to order a pair of vee blocks (the unbranded far eastern type from Arc)

                                    Hi,teeth 2

                                    ARC has been selling Vee Blocks for nearly fifteen years now. During this period, the range has been modified, based on availability (certain manufacturers closing), and demand – from hobby and industrial users. All our Vee blocks are of Chinese origin, made is factories which I have visited, and who I am happy to work with. ARC has had zero returns for these products which I can recall, due to technical issues.

                                    Yes, there is good and bad made in all places. So far, we believe that ARC has been lucky. We do supply these products to certain branches of a Leicester company mentioned on here. We also supply the largest size Vee blocks to a major blue chip engineering company based in Leicester. Although we do not provide any certification, this has not deterred such operations from buying from us.

                                    I am unable to speak too much for Indian origin Vee blocks. It depends on were in India they are made. In my search, I found that the better product was made in Puna and the South of India, rather than the North. The engineering in Puna is geared around servicing the automotive industry based there. However, the pricing at the time I checked (about five years ago) was less competitive. With North Indian production, there is good, bad and ugly, depending on what the importers around the the world want to pay… based on what you want to pay.

                                    Ketan at ARC.

                                    #304263
                                    JasonB
                                    Moderator
                                      @jasonb

                                      It seems that "Oxford" is a trade name owned by Kennedy who just so happen to also trade as Cromwell Tools. So at best you will be getting Cromwell's own brand tooling made where the price point suits.

                                       

                                      J

                                      Edited By JasonB on 26/06/2017 11:37:18

                                      #304265
                                      MW
                                      Participant
                                        @mw27036
                                        Posted by JasonB on 26/06/2017 11:27:11:

                                        It seems that "Oxford" is a trade name owned by Kennedy who just so happen to also trade as Cromwell Tools. So at best you will be getting Cromwell's own brand tooling made where the price point suits.

                                         

                                        J

                                        Why do factories of all places shuffle around with the branding?

                                        I wouldn't call this the fault of the people who make the stuff, they probably aren't even aware of the people it goes to but the fault of the people representing them.

                                        When I worked in some factories I barely knew a thing about where it ended up. Where I worked individual components were made from anything under 30mm downwards and these would often go to other factories who put the components into the assemblies. 

                                        I made and inspected things for Cadburys (brass pins to push open moulds for chocolate Easter eggs) to F1 plastic armatures for coil windings, French telecommunications company plastic electrical connectors, aircraft connectors to PTFE grommets for the NHS to put into children's ears. but there were plenty where I had no clue as to what it actually did, that was none of my concern as far as the managers and sales teams would let me know.

                                        I would also add that even in the most high tech facilities with rigorous inspection control, every item inspected if need be, mistakes still happen and bad stuff gets through. Having said that, we never disputed when mistakes were found.

                                        Michael W

                                        Edited By Michael-w on 26/06/2017 11:39:31

                                        #304266
                                        JasonB
                                        Moderator
                                          @jasonb
                                          Posted by Michael-w on 26/06/2017 11:31:07:

                                          Why do factories of all places shuffle around with the branding?.

                                          Because it makes people think they are getting something better. Take Cromwell again, would you be more tempted to buy their Swiss-Tec brand over one called China-Tec?

                                          Edited By JasonB on 26/06/2017 11:40:13

                                          #304270
                                          Ketan Swali
                                          Participant
                                            @ketanswali79440
                                            Posted by JasonB on 26/06/2017 11:39:46:

                                            Posted by Michael-w on 26/06/2017 11:31:07:

                                            Why do factories of all places shuffle around with the branding?.

                                            Because it makes people think they are getting something better. Take Cromwell again, would you be more tempted to buy their Swiss-Tec brand over one called China-Tec?

                                            Edited By JasonB on 26/06/2017 11:40:13

                                            SWISS+BURR™ – brand owned by Cromwell. Not made in China. If you look at the link, you can possibly figure out who made it for Cromwell. It isn't made in Switzerland. Extreamly popular in the Asian market – India and in China, due to the great marketing by Cromwells sales reps. in those countries.

                                            Ketan at ARC.

                                            Edited By Ketan Swali on 26/06/2017 12:05:07

                                            #304278
                                            Samsaranda
                                            Participant
                                              @samsaranda

                                              We all love to buy wisely and hope to get a bargain price wise, but it eventually becomes apparent that no matter how we scour the marketplace we will usually only get a level of quality commensurate with the price that we pay, unfortunately "inspection grade" is not available unless we pay the right price for it.

                                              Dave

                                              #304281
                                              Robbo
                                              Participant
                                                @robbo

                                                Quote Michael W "Why do factories of all places shuffle around with the branding?"

                                                For the same reason that TESCO sell foodstuffs branded with the names of non-existent farms. To increase sales.

                                                Jason B's Links show us that these are all distribution companies, their expertise lies in the sourcing of the product, not its manufacture.

                                                #304284
                                                SillyOldDuffer
                                                Moderator
                                                  @sillyoldduffer

                                                  Choochoo-baloo I don't really understand why you're worried. As you've got a surface plate you can check whatever V-blocks you buy. IF they're not to specification and you bought them from a reputable UK supplier you can send them back.

                                                  Jumping to conclusions about the quality of a product depending on where in the world it was made is illogical. If you read industrial history you will find that assumptions of quality based on Nationality always been dubious. Birmingham was once infamous for churning out cheap nasty tat even though many seriously good firms were also located there. Nowadays it's even more difficult to generalise. Manufacturing and services are much more globalised. Design, manufacture, sales, tax, management, ownership etc. can all be based in different countries. What's manufactured by anybody will be aimed at a market: as Ketan remarks this has space for the good, the bad and the ugly.

                                                  Rather than worrying about country of origin, you're better off buying by specification and checking it. As this is liable to be costly and time consuming, buying by reputation is quicker, though you always need to confirm that a reputation is still justified. A brand-name is nowhere near as solid as a reputation: when a company goes out of business their brand-names are usually sold to the highest bidder. I always treat brand-names with suspicion.

                                                  My V-Blocks are fine for what I use them for. I've no idea where they were made.

                                                  One thing about the methodology used in the 'crap' video worried me. The diameter of the dowel is small in comparison with the size of the V block. The chap may have been measuring the accuracy of the notch at the bottom rather than the accuracy of the V surfaces. I wish he'd used something bigger: Jason's test with the shank of an HSS cutter is much more convincing.

                                                  I'm quite intrigued to know what will be made in the Choochoo-balloo workshop. Not a criticism, but chaps new to metalwork don't normally start at the precision end of the hobby: it's expensive. If the plan is to own 'quality' tools for pleasure rather than profit, that's fine by me.

                                                  Dave

                                                  #304301
                                                  Neil Wyatt
                                                  Moderator
                                                    @neilwyatt

                                                    At one point, 90% of the world's needle production was made in Redditch.

                                                    Despite this concentration of expertise at least 40% of the World's below-average needles were made in Redditch!

                                                    Neil

                                                    #304302
                                                    larry Phelan
                                                    Participant
                                                      @larryphelan54019

                                                      Hi Bandersnatch,

                                                      Dont feel too bad about your vee blocks,perhaps they were intended to be used along with my rotary table. They would get on well together,being so well matched ! Perhaps the errors in one would cancel out the errors in the other. Dont throw out the box they came in,the cardboard might come in handy for packing them up here and there to get them level [just a thought ]

                                                      I doubt if they were just two that managed to slip through the net,there are so many posts about this kind of crap that the net would need to have huge holes in it. I believe that sometimes,not often, a good item manages to get through. But,make no mistake,a great deal of rubbish is still "Made in England" ,as I know to my cost.

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