Another bridge too far

Discussion in 'Members Personal Layouts' started by paul_l, Feb 8, 2018.

  1. Toto

    Toto I'm best ignored Staff Member Founder Administrator

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    They look a bit big Paul. Have you got a figure that you can stand beside it ? They are good and the whole shape has been well captured.

    Toto
     
  2. paul_l

    paul_l Staff Member Administrator

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    You're right Tom - not often you've heard that :avatar:

    36mm to top of the stand and 34mm to the top of the rail, that's what I get for downloading a file and hitting print :facepalm:

    Looking at current regs, they should be 1.1m approx 43 inches which will give approx 25mm in O gauge or reduce the model by 25%

    Ah well I knew I was getting on too well.

    Paul
     
  3. Toto

    Toto I'm best ignored Staff Member Founder Administrator

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    Bugger the regs ...... it's whatever looks eye sweet. Place a figure next to it. I reckon the top rail should be about chest height.
     
  4. paul_l

    paul_l Staff Member Administrator

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    Is this better



    I need to wait for the next batch to print to be able to create the correct length and profile.

    Paul
     
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  5. York Paul

    York Paul Staff Member Moderator

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    That looks superb Dundee Paul, I think you've nailed it.:thumbup: Now is the plastic trigger spray bottle in the background some kind of super size modern art sculpture? :avatar::avatar::avatar:
     
  6. Toto

    Toto I'm best ignored Staff Member Founder Administrator

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    Its Paul's take on the Kelpies. :avatar:

    upload_2018-7-8_16-58-54.jpeg

    toto
     
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  7. York Paul

    York Paul Staff Member Moderator

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    Genius Toto pure genius words just cannot define that man as an artist:avatar::tophat::worship::worship::worship::cool::D
     
  8. Timbersurf

    Timbersurf

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    luke Towan has just released this
    Building the ULTIMATE Waterfall
     
  9. paul_l

    paul_l Staff Member Administrator

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    Phylasteins the pair of you, cant you tell its a water feature

    Bit more earth works

    Foam cut / extra added for the road, with a raised pathway for pedestrians (I've placed a hand rail to help envisage the effect).


    A single track road winds down part of the road, before the mountains start to take over again.

    The junction


    and the road


    Paul
     
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  10. Gary

    Gary Wants more time for modelling.... Staff Member Administrator

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    Looking good Paul but..., should not the piers be wider than the steel girder...?? :scratchchin:

    Cheers, Gary.
     
  11. paul_l

    paul_l Staff Member Administrator

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    Probably, and on the next layout will be :avatar:

    The are attached permanently to the supports and will have to do, any way, bridges made in Dundee are allowed to be wrong, we make them top multitask, cross the river and wash the loco :scratchchin:

    [​IMG]

    Tay Bridge Disaster

    Paul
     
  12. paul_l

    paul_l Staff Member Administrator

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    And more earth works today, in between printing more handrails.

    Added some plaster bandage to the bits so far


    Then started to add more polystyrene foam to make formers

    Gorilla glue used to stick them down, and bags of plaster of paris make excellant weights.


    Test fitting the next two formers



    Bit more foam added to the road


    Now working on the bits at the back



    Looks like the mad rock builder will be getting plastered tomorrow.

    Paul
     
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  13. paul_l

    paul_l Staff Member Administrator

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    A little progress made today, ost of the time was spent making rock castings, with a packet of plaster that was on its way off - its over 4 years old so I can't really complain, but I had roughly 3 mins working time. On the plus side I could reuse the mould in less than 15mis.

    Bit more foam sculpting on the road and pathways, enough to be able to seal them in plaster bandage, and for the piccies a test fit on the hand railing



    Paul
     
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  14. Toto

    Toto I'm best ignored Staff Member Founder Administrator

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    Really taking shape now Paul. I can just about hear the trains running over the bridge.

    Toto
     
  15. York Paul

    York Paul Staff Member Moderator

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    That's really taking shape in a big way now Dundee Paul :tophat::tophat::tophat: I can see this being one hugely popular layout with viewers on the exhibition circuit :thumbup:
     
  16. paul_l

    paul_l Staff Member Administrator

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    Thanks guys.

    A little more progress, another 2 and a bit Kg of plaster used up making rock mouldings. As these can take a few days to fully dry, yesterdays and today's moulding's were put in the oven for approx 1 hour @ 120C, opening the door several times to let the steam out. Once finished the oven was turned off, but the door opened slightly to allow any remaing moisture to vent and the mouldings to cool slowly.

    A few of them have been fitted on to the layout, and as I'm getting a visit tomorrow from Toto, to have a go at mountain / rock building and painting, I thought I'd better get some of it base coated with Slate Grey emulsion - the bit at the font 1st coat used a whole tester pot, just as well I bought a 2.5 litre tin.


    His first job tomorrow with be to make up a wash, and apply to the surface, then a coffee or two later, start the dry brushing, Slate Grey - will lighten the base coated area with the wash, then Dove Grey, again all over, and finally downward strokes with Silver Mist (a very pale grey) to highlight edges.

    The board will then get spun round and he can try cutting / joining / sculpting the foam, then attach rock mouldings, plaster bandage and plaster fillins.

    Yep our beloved leader is coming to Dundee to get plastered, and drive home afterwards :avatar:

    Paul

    PS Toto if you read this before you leave, remember track, moulds and the Traverser power supply.
     
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  17. paul_l

    paul_l Staff Member Administrator

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    A busy day, and probably working the wrong way, but hey what's new.

    Toto Van Go, working in his black wash period - applying a thin black wash to all the base coated surfaces. Toto was reminded even if he somehow manages to screw it up, it's just a repaint with base coat and start again.


    After mastering drowning everything in black wash, he moved on to dry brushing.


    Not bad for his first attempt


    Next we hit the rocks, gluing the rock castings at an angle representing one side of a syncline, on the rear face we will model both sides of the syncline with a fault line in the middle, eroded to give a gulley.

    The castings were clued on with a hot glue gun, applying the glue to the casting then pushed in place on to the foam base.

    Next plaster bandage was applied .






    Then plaster applied to fill the gaps and smooth out the plaster bandage, also with some bits of tissue to mixed in the plaster to form other bits of relief.


    On the otherside of the track, the foam had a rough V drainage gully cut and a culvert made. The culvert was made from clay formed around a piece of pipe.
    The whole lot again covered in plaster bandage.




    The culvert will line up with syncline fault and gulley, and will have a small water feature.

    Now that Toto has been plastered he's heading home.

    Paul
     
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  18. Toto

    Toto I'm best ignored Staff Member Founder Administrator

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    And I did remember them all. :avatar: A very enlightening day was had getting in and abut the paint, plaster and plaster bandage etc. A nice easy ( but messy ) medium to work with. It's amazing the results that you can achieve and quite easily as well. There are a few pictures on Pauls camera that will show the Rogers made today including a terrific culvert and outfall.

    A good day and the catering up to its usual high standards. :thumbs: It got me raring to go with my own now. I have my CV to tidy up for tonight for another opportunity that has came my way. ( one of another two ) so it will likely be tomorrow for me. I have everything I need in stock so I'll be able to get a quickish start.

    Cheers for now and it's over to Paul for the pictorial update.

    :cheers:

    Toto

    Apologies for my timing ...... Paul beat me to it ...... Passing posts and all that.
     
  19. Timbersurf

    Timbersurf

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    Paul, I am intrigued by your use of plaster and polystyrene. It is somewhat old fashioned. I have done much research on this subject (like I do with everything:redface:) and come to a few conclusions.
    There are far better insulation materials available than polystyrene (phenolic, polyisocyanurate and extruded polystyrene at at the top of the list) that are not as fragile, albeit slightly more expensive.
    I forget why, but polyisocyanurate is not in the top two (I think because its same price as phenolic but much harder to work with)
    Extruded polystyrene is the top choice in the USA/Oz (its the one you can cut like polystyrene with a hot wire)
    The best you can readily get in UK is phenolic (made by Kingspan) but I don't think you can cut it with a hot wire.
    It is the one I regularly use. I am still unsure if there is a local supplier to me for extruded polystyrene, the only UK suppliers I have found, charge a big delivery cost and require a minimum order quantity. For the 'big build', I will bite the bullet and fork out for it.

    For strength, surface texture and to obtain a robust surface with durability, polystyrene needs a covering, of something like plaster cloth etc. This increases the weight of the layout massively. For a fixed layout, I guess this does not matter, but for a transportable layout (house move/exhibition) it's a bit of a nono, not to mention that without serious rigidity in the frame, highly susceptible to cracking on the move.

    The Americans tend to just use expanded styrene on its own, very easily shaped and with a surform and sandpaper can be made into the desired shape/surface. Once treated with a latex paint (to seal it), they simple cover with the scenic materials. Only were there is a rocky outcrop, do they resort to sticking on a plaster mould, though I have seen some realistic cliff faces hand carved directly in the foam!
    The reason I ask is because I don't know the purpose of luib? but with it being sectional, does the above misgivings apply?
    Of course rule 1 applies and I guess if you have a free supply of polystyrene then the whole discussion is mute! :facepalm:
     
    Last edited: Jul 12, 2018
  20. Toto

    Toto I'm best ignored Staff Member Founder Administrator

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    Luib is a location / area up the north of Scotland following the A85 which stretches up through Crianlarich and Tyndrum and splits towards Oban and Fort William. there used to be an old line which came up through Calendar, Balquidder and Glenogle an area where with the assistance of glacial activity lent itself well to creating a path for a railway line. Some areas of course needed clearing and assistance to create the route and these areas were hewn through ...... Rock.

    My layout " Luib Bridge " is based on a ficticous area based loosely around the Killin village where a goods line had once went. Paul and I decided to go together on a modular layout build sticking loosely with a highland rural theme with lots of " rule 1 " applying.

    Its amazing though how the use of poly wotsit in Pauls build ( including the baseboard itself ) has kept the whole thing remarkably light weight compared with other baseboards that we have both attempted in the past. the addition of plaster and bandage etc may have increased it a bit but I believe on the whole ...... it is still offering a huge weight advantage.

    Everybody to their own I suppose.

    cheers

    toto
     
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