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A 3D printing virgin

Discussion in 'Workshop Benches' started by Mossy, Aug 8, 2021.

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  1. Oct 3, 2021 #201
    Mossy

    Mossy A classic grump Yorkshire man Full Member

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    Rob,

    I can easily print you a new body, so dump that one.

    As for what colour I think Tom is the best man to answer that. There are pictures in the NER Record Vol 2 page 72 (I think) of them being Chocolate and Indian Red with a change dated 1911 ish to Red Oxide. I should point out these are photos of models from the famous Bramblewick layout.

    Mossy
     
    Last edited: Oct 3, 2021
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  2. Oct 3, 2021 #202
    paul_l

    paul_l Staff Member Administrator

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    Acne - melted or pockmarks or both

    The melted underside appearance can be either an exposure issue or just too large an unsupported area being printed at once so is flexed with the fep movement. If the exposure is ok, I normaly reduce the print area by tilting the model to 45 degrees, but that has a massive hit on the print time.
    I have noticed that it tends to happen on large flat areas, as an experiment I am goint to try varying the surface maybe adding a texture of some sort and increasing the amount of supports.

    Pockmarks, is easy, just reduce the size and penetration of the support, downside the supports may fail.

    Paul
     
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  3. Oct 3, 2021 #203
    Mossy

    Mossy A classic grump Yorkshire man Full Member

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    When I mentioned Acne and Zits, I was referring to the underside of the model in Chitu given the huge number of supports I added not my pock marked bottom, but how do you know about that, have you been looking.:avatar:
     
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  4. Oct 3, 2021 #204
    Mossy

    Mossy A classic grump Yorkshire man Full Member

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    Rob,

    Somewhere way up this thread I asked about the interior of V1 brake vans and you kindly provided some photos you had taken. Well and not sure why I didn't pick it up earlier this sits in the V1/1 section of Ian Sadlers book:

    Document_2021-10-03_184808.jpg

    It debunks some of the things we thought, like the brake standard being on the lower floor, which in hind sight doesn't make sense given how close it would be to the stove.
    Sadly "just off centre" doesn't specify to the left or right.

    The other bits I picked up were

    "partially partitioned", so some kind of internal wall, presumably to stop people falling off the platform and

    "a seat at either end of the raised platform", I'm guessing given the penny pinching nature of the NER, they weren't Chippendales or even repro Chippendales, just ordinary basic chairs, and at a guess fixed to the floor somehow. It looks like I need to draw a basic chair and partition for the V1/2 brake interiors. Such is life.

    Mossy
     
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  5. Oct 3, 2021 #205
    Tom Burnham

    Tom Burnham Full Member

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    Hi Rob,

    The definitive book on North Eastern Railway Brake Vans is the one written by Ian Sadler and published by Irwell Press. It only has a single page describing the liveries applied but he was only able to find one original written record and his conclusions conflict with the advice given in other publications. I have attached a scan of the relevant page.
    North Eastern Record Volume 2 covers the rolling stock and has a chapter dedicated to wagon liveries split into five separate periods. Up to the end of period 3 in June 1903 the brake van livery is described as being chocolate with red (vermillion) ends but after that the situation becomes vague although it is implied that by Period 5, from April 1911 until 31 December 1922, that the chocolate had been superseded by Indian Red as it was no longer listed in the standard colours that were used. There are some coloured illustrations of models, including one of a parcels van built in the 1870's so assumed to be showing an authentic brown and red livery, together with examples of brake vans from the excellent Bramblewick layout. The book also includes an appendix on colour matching.

    Tom.

    TB_edited-1.jpg
     
    Last edited: Oct 4, 2021
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  6. Oct 10, 2021 #206
    Mossy

    Mossy A classic grump Yorkshire man Full Member

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    Thought I would unveil my latest creation a NER V1/1 brake van.
    Body not quite right but its a good second test print, the roof printed 45 x 45 is fine.

    IMG_0959.jpg

    A first test of the clasp brakes, yokes etc is printing now and will be washed and cured later tonight while the springs turned out to be pretty easy, they will get a test print tomorrow so I can test then with my type 1 axle box and W Iron.

    2021-10-10.png

    Then there's just the footboards and interior to sort, must of the interior was done as a part of the V1/2 build so that should be simple.
     
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  7. Oct 11, 2021 #207
    Mossy

    Mossy A classic grump Yorkshire man Full Member

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    Well brake gear printed, washed and cured and looking good

    IMG_0960.jpg

    BUT. brake yokes legs etc at 1mm x 1mm have proved just to fragile, I couldn't get any of them cut from the supports with them breaking, so back to the drawing board but this time beefed up by 50% - 1.5mm x 1.5mm and released from their supports before curing. Just a few sketches to redraw and a new print run scheduled. This will be done later today, in the mean time I am going to start assembling the body, floor and running gear.

    More later.

    Mossy
     
    Last edited: Oct 11, 2021
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