New Granite Surface Plate

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New Granite Surface Plate

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Viewing 25 posts - 1 through 25 (of 68 total)
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  • #335843
    jimmy b
    Participant
      @jimmyb

      I've treated myself to a new granite surface plate, the old one from Axminster was getting too crowded, (it was one odf the 300x200x50 ones).

      Not sure how good this will be, **LINK**

      It's coming on Wednesday, so I'll find out then!

      Jim

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      #18800
      jimmy b
      Participant
        @jimmyb
        #335854
        nigel jones 5
        Participant
          @nigeljones5

          I broke mine in three pieces by accident yesterday – gutted!

          #335856
          Mike Poole
          Participant
            @mikepoole82104
            Posted by fizzy on 08/01/2018 10:39:54:

            I broke mine in three pieces by accident yesterday – gutted!

            If it doesn't give away anything too embarrassing how did you manage that Fizzy?

            Mike

            #335911
            Howard Lewis
            Participant
              @howardlewis46836

              Fizzy,

              If it is any consolation, I made one for The WaterWorks Museum in Hereford. Bought a slab of marble from a stonemason in a local town.

              Made up a sturdy angle iron frame, with internal cross bracing, to provide a flatt(ish) surface on which the marble could sit. Each corner had an adjustable levelling screw, at the bottom of a vertical piece of angle to prevent the marble from moving off the base.

              Placed a sheet of hardboard on it, which was covered with wet, rather sloppy plaster / wall filler, before placing the marble slab onto it. In that way, the marble should be "floating" and free of stresses.

              The 18" x 24" slab of marble cost me £30. Larger would have been too heavy to place / remove from, the boot of the car! You may be able to get a better deal.

              Then made up, and varnished, a simple plywood cover for it.

              Howard

              #335929
              John Haine
              Participant
                @johnhaine32865

                Given that the Chronos one is 18" sq and 4" thick, and the price includes delivery, that sounds quite reasonable to me!

                #335939
                Enough!
                Participant
                  @enough

                  They don't seem to specify the weight – which is a bit of an omission for something like this.

                  #335943
                  I.M. OUTAHERE
                  Participant
                    @i-m-outahere

                    C'mon Fizzy spill the beans ! How did you break your surface plate ?

                    Ian.

                    #335946
                    Dullnote
                    Participant
                      @dullnote

                      Hi I got granite composite cutting board from Tesco very flat, well flat for my skills, cost £12.

                      #335948
                      Michael Gilligan
                      Participant
                        @michaelgilligan61133
                        Posted by Bandersnatch on 08/01/2018 17:20:08:

                        They don't seem to specify the weight – which is a bit of an omission for something like this.

                        .

                        The density of granite is fairly consistent, so; unless they have milled it out [which seems highly unlikely] it should be a simple matter to estimate the weight.

                        MichaelG.

                        #335949
                        jimmy b
                        Participant
                          @jimmyb

                          According to UPS it’s 56kg,

                          Jim

                          #335990
                          Enough!
                          Participant
                            @enough

                            Posted by Michael Gilligan on 08/01/2018 18:38:45:

                            …….it should be a simple matter to estimate the weight.

                            I don't doubt it. Why should I need to? This is a sales page and the weight seems rather a critical characteristic for what they are selling.

                            #335993
                            nigel jones 5
                            Participant
                              @nigeljones5

                              I had it propped on its sude against the hydraulic press….moved predd, plate dropped and kaput! Ordered a new one but that one had sentimental value – gutted

                              #335995
                              Matt Harrington
                              Participant
                                @mattharrington87221

                                Well, I have just received my one from Chronos – 400 x 250 x 80 @ £52 (free delivery) – 25Kgs (bargain)

                                I haven't put it in the workshop yet but it appears to be good and certainly good enough for me!!

                                Matt

                                #336217
                                jimmy b
                                Participant
                                  @jimmyb

                                  Mighty impressed!

                                  Its a big un! Measures 18" x 18" x 3 1/2".

                                   

                                  The poor chap from UPS carried it up the drive! I've had a quick check of it, looks perfect, the enclosed "certificate" gave a max error of 2.5 microns. I've ran my "tenth" clock across it and get almost zero error.

                                  With a discount code, it was about £78, delivered

                                   

                                  Happy chap today

                                   

                                  Jim

                                  Edited By jimmy b on 10/01/2018 17:03:35

                                  #336221
                                  I.M. OUTAHERE
                                  Participant
                                    @i-m-outahere
                                    Posted by fizzy on 08/01/2018 23:05:07:

                                    I had it propped on its sude against the hydraulic press….moved predd, plate dropped and kaput! Ordered a new one but that one had sentimental value – gutted

                                    crying 2 If that was me it would have landed on my foot so i would be nursing a broken foot along with a broken plate !

                                    Ian.

                                    #336237
                                    Neil Wyatt
                                    Moderator
                                      @neilwyatt
                                      Posted by fizzy on 08/01/2018 23:05:07:

                                      I had it propped on its sude against the hydraulic press….moved predd, plate dropped and kaput! Ordered a new one but that one had sentimental value – gutted

                                       

                                      Oh dear!

                                      I trust the sentimental value wasn't because it had 'In Loving Memoriam…' carved on one side!

                                      Neil

                                      Edited By Neil Wyatt on 10/01/2018 18:01:46

                                      #336240
                                      James Wilkinson 3
                                      Participant
                                        @jameswilkinson3

                                        Hooorah! I bought one on Friday from Chronos as well, SCT 400 x 250x 80 Granite surface plate. It will be here tomorrow. Can't wait! 😀

                                        I also managed to bag a unused 1981 670mm Chesterman vernier height gauge the other week as well in mint condition with box and everything. 2018 is looking like a proper job 😀

                                        #336242
                                        jimmy b
                                        Participant
                                          @jimmyb
                                          Posted by James Wilkinson 3 on 10/01/2018 19:20:03:

                                          Hooorah! I bought one on Friday from Chronos as well, SCT 400 x 250x 80 Granite surface plate. It will be here tomorrow. Can't wait! 😀

                                          I also managed to bag a unused 1981 670mm Chesterman vernier height gauge the other week as well in mint condition with box and everything. 2018 is looking like a proper job 😀

                                          Excellent.

                                          I hope you are as pleased as me!

                                          Jim

                                          #336252
                                          Neil Wyatt
                                          Moderator
                                            @neilwyatt

                                            > 2018 is looking like a proper job

                                            Or you'll end up miserable because now you can check everything you make you will see how wonky it all is…

                                            Neil

                                            #336255
                                            James Wilkinson 3
                                            Participant
                                              @jameswilkinson3

                                              Neil, I am a professional and it will be used as evidence against those who doubt my skills cheeky. Thankfully, I will not be using this gear to check my work, but to accurately mark out hole positions for the musical instruments I manufacture (Low whistles and penny whistles). laugh

                                              Cheers Jim! beer

                                              #336458
                                              Howard Lewis
                                              Participant
                                                @howardlewis46836

                                                Believe it or not, even a thick (circa 150 mm) granite surface table will warp. My late employers ruined a large one (6' x 4&#39 by removing from the steel table frame, and leaning it against a wall. When replaced, some time later, it had warped!

                                                That was a mistake costing well over £3,000!

                                                One of my friends loaned one to a friend, who used it to lap the joint faces of a car engine manifold! And so ended another friendship

                                                So treat them with care and respect.

                                                Howard

                                                #337348
                                                James Wilkinson 3
                                                Participant
                                                  @jameswilkinson3

                                                  I am very happy indeed with this surface plate! I made a box for it and it sits in the bottom part permanently with a piece of cork (3mm thick) underneath to ensure it is fully supported. I have lined the top of the box with cork as well. I purchased a selvyt cloth as well for cleaning before and after use. Only thing I will say is that when it came it had a very small chip off the edge, I think you can just about make it out in the pictures but it is no problem at all. Price is bang on. Happy days!

                                                   

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                                                  img_0162.jpg

                                                  Edited By James Wilkinson 3 on 18/01/2018 22:14:40

                                                  Edited By James Wilkinson 3 on 18/01/2018 22:19:39

                                                  #337372
                                                  not done it yet
                                                  Participant
                                                    @notdoneityet

                                                    Should they not be supported at three points?

                                                    #337393
                                                    Michael Gilligan
                                                    Participant
                                                      @michaelgilligan61133
                                                      Posted by not done it yet on 19/01/2018 09:13:25:

                                                      Should they not be supported at three points?

                                                      .

                                                      For "anti-rocking" stability, three-point support is ideal … but that does permit the risk of the plate sagging under its own weight [minimised by selecting the right three points, but never zero].

                                                      Otherwise; distributed support, as provided by James's cork sheet, should be good.

                                                      MichaelG.

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