TFW’s workshop

Discussion in '2mm Lounge' started by Tim Watson, 11 November 2017.

  1. Tim Watson

    Tim Watson Western Thunderer

    The GC water scoop tenders had a cute little ships wheel to help raise & lower the scoop. This tender etch doesn’t have any included, but I was fortunately given one from a Michael Edge etch for a standard tender.
    [​IMG]

    It’s a beautiful little etch, but there is no hole in the middle. Drilling this out free hand would have ended up with S shaped spokes or the carpet monster claiming another object, so I soldered it to a piece of brass to support it whilst drilling the 0.3 mm diameter hole.
    [​IMG]

    In order to give it sufficient strength I think it needs the rod to go through the housing which was made from a piece of brass, again drilled 0.3mm and soldered on to the tender top.
    [​IMG]

    The wheel will be removable for the time being, whilst the engine and tender are being handled extensively during construction.

    [​IMG]

    [​IMG]
    Tim
     
    Last edited: 2 November 2019
  2. simond

    simond Western Thunderer

    Tim

    Thanks for showing how to make a difficult job easy. Completely obvious after your explanation..

    Another case of no excuse in 7mm....

    Cheers
    Simon
     
  3. Tim Watson

    Tim Watson Western Thunderer

    More progress on Valour, although maybe not immediately obvious from the previous overall shots. Steps on the engine & tender, water filler details on the tender and 22 x 0.3/0.5mm diameter holes in the boiler for washout plugs, handrail stanchions & mud hole doors.
    [​IMG]

    I had one drill ‘separate’ (as endodontists call it) - maybe you can spot where?
    [​IMG]

    The boiler barrel was wrapped in some micro mesh abrasive cloth to hold it in the vice for drilling and avoid any marks from the jaws. The TC drills are very sharp but need coolant (Rocol RTD - visible over the cross mark).
    [​IMG]

    The tender top is now soldered on, but with it tightly in place, I needed to make a bit more room for the brass stay alive, with some modification to the coal cover. Maybe buffers next.


    Tim
     
    Last edited: 4 November 2019
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  4. Mike W

    Mike W Western Thunderer

    Fabulous Tim, just fabulous. Whenever I see your work I recall one of the early issues of Model Railways (the MRN replacement) and part one of an article on building a GWR 2800. It was superb but I couldn't work out whether it was 4mm or 7mm. The following month all was revealed and it was 2mm. I still remember that after about 40 years! Your work is an inspiration. Thank you.

    Mike
     
  5. Yorkshire Dave

    Yorkshire Dave Western Thunderer

    Thanks for this Tim, another useful tip to add to the armoury.
     
  6. Tim Watson

    Tim Watson Western Thunderer

    Valour now has the washout the plugs on one side of the firebox and some oval holes for the mud hole doors. I have also represented an inspection hatch on the reversing gear with a bit of filing.
    [​IMG]

    The front buffers were turned from some 15A plug brass (off an old Hornby Dublo controller that my son found). They were parted off with a slitting file and the drill shank reversed and ‘up the hole’. That way they do not fly off into outer space.
    [​IMG]


    The same drill shank was used to help align the buffer stocks in the beam, whilst soldering into place. Drill shanks will not accept normal soft solder.

    [​IMG]

    The buffers were turned, oversize, from steel and then filed top and bottom to make oval, using the slot in the collet as a guide (a pin chuck would also serve). Remember to use a safe edged file!
    [​IMG]

    The over-thick top & bottom of the buffer heads were reduced by using abrasive points in the mini drill.
    [​IMG]

    Finally finished off with some micro mesh polishing cloth.
    [​IMG]

    Tim
     
    Last edited: 10 November 2019
  7. P A D

    P A D Western Thunderer

    Hi Tim,
    Lovely buffers. Again, I'm trying to picture how small they must be in 2mm scale.

    I'm not sure if you will want to add the footsteps on the top of the shanks, but on the front they are full length and at the rear they are about half the length of the stock. In this cropped image from the internet (I didn't take a decent one myself), you can see what I mean. If you look closely, you can make out the key and key way at the top to keep the oval heads horizontal.
    20191110_123935.jpg

    The footstep is quite narrow as can be seen in this view from the front.
    20191102_103113.jpg

    I think the ones at the rear may have been replaced as they look slightly wider and I believe they should be offset towards the front and should be touching the black beading. Logically, the rear ones would get more use than the front ones over the years, wear down and need replacing.
    20191102_103816.jpg

    Cheers,
    Peter
     
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  8. Tim Watson

    Tim Watson Western Thunderer

    Thanks Peter. I was aware of the buffer stock step. I think I have a way of holding it in place whilst soldering it on. There certainly won’t be one at the back!

    Tim
     
  9. Tim Watson

    Tim Watson Western Thunderer

    Putting the buffer steps on was easier than expected. The step and stock were tinned and then the two held together with titanium tweezers. Quick flash with iron...
    [​IMG]

    and hey presto!
    [​IMG]

    The two small steps have subsequently been cured of droopiness btw.
    Tim
     
  10. P A D

    P A D Western Thunderer

    Hi Tim,
    Have a look at my D11 thread. A chap called Tony West has posted some comments and drawings that you will find interesting. Ignore my comments re the footstep on the rear buffer stocks. They are correct according to the drawings.
    Cheers,
    Peter
     
  11. Tim Watson

    Tim Watson Western Thunderer

    Thanks Peter. I have been using the drawings in the Johnson book. I think my tender as modelled is OK for Valour.

    The mud hole doors have been made by chain drilling five oval holes with a 0.5mm diameter drill on the shoulders of the firebox.
    [​IMG]

    The covers were made up from a squeezed bit of brass rod.
    [​IMG]

    The cut off squeezed pieces were pushed into the holes and a small piece of multi core solder placed over the top of each.
    [​IMG]

    The back of the firebox was slowly brought up to heat with a blow torch with a splash of acid flux to help the flow.
    [​IMG]


    After knocking the corners off with a file and polishing, the mud hole doors finish off the firebox sides.
    [​IMG]

    She’s looking awfully empty on top.

    Tim
     
  12. Tim Watson

    Tim Watson Western Thunderer

    It’s been a bit of a slow job over the last couple of days making the hinge for the smokebox door. This was filed up from 10 thou steel sheet. It took three goes to get the shape right and the hinge pin correct.
    [​IMG]
    I have also roughed out the smokebox dart and wheel. This has a temporary LNWR five spoke wheel - it should be four spoke - from an etched brass Jumbo kit: it is clearly the wrong colour. Incidentally, anyone interested in the loco & tender kit, let me know as it is not an engine I will be making. A friend has kindly offered me a nickel silver wheel which should look better. However, I might have a go at making my own four spoke wheel in steel.

    Tim
     
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  13. Tim Watson

    Tim Watson Western Thunderer

    The smokebox hand wheel was made by drilling five 0.3mm diameter holes within a 1.5mm diameter circle in 0.26mm thick steel.
    [​IMG]
    The circumference of the wheel was then filed into the steel.
    [​IMG]
    An 08 NiTi K flex endodontic file was used to improve the shape of the holes.
    [​IMG]
    The wheel was then soldered onto the dart in front of an etched 2mm handrail knob, acting as the other hand (a jolly clever idea from Nick Mitchell)
    [​IMG]
    [​IMG]
    I think the end result looks more restrained than the five spoke wheel. The handrails will finish off the smokebox, but I think my eyes need a rest, even though I was wearing 3.8x loupes for this job.


    Tim
     
    Last edited: 17 November 2019
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