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Thread: WW1 Thornycroft restoration

  1. #2481
    Join Date
    Jun 2006
    Location
    Leicestershire
    Posts
    966

    Default Re: WW1 Thornycroft restoration

    It is interesting that you should ask that one Andy, as Barry has just very kindly printed the patterns for the silencer ends for us. This is an original, photographed many years ago.

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    And these are the patterns and core boxes.

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    They are super objects and will do the job nicely. However, their surfaces have a definite texture to them which will allow the sand to get a 'key' and make them difficult to remove. Barry recommends 'Pattern Coat' ( http://www.easycomposites.co.uk/#!/p...at-primer.html ) which he applied to the throttle quadrant to such good effect. It builds well and with a rub down took out the printing lines nicely. Father has just bought some and I will have a go with it shortly.

    Steve

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  3. #2482
    Join Date
    Oct 2013
    Location
    Essex
    Posts
    312

    Default Re: WW1 Thornycroft restoration

    Quote Originally Posted by Old Bill View Post
    I However, their surfaces have a definite texture to them which will allow the sand to get a 'key' and make them difficult to remove. Barry recommends 'Pattern Coat' ( http://www.easycomposites.co.uk/#!/p...at-primer.html ) which he applied to the throttle quadrant to such good effect. It builds well and with a rub down took out the printing lines nicely. Father has just bought some and I will have a go with it shortly.
    I keep meaning to get some of that. I am actually printing patterns at the moment (machine tool parts) and I have been using "knifing putty" to fill the texture to good effect. It comes under a variety of names (Spat-o-Rapid is one, and Halfords sell a variant. My current tube is https://www.spraygunsdirect.co.uk/3m....0Cf4Xyk0.dpbs which makes it sound likr something for holding windows in)

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