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Ilhan Gokcay

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Posts posted by Ilhan Gokcay

  1. Finished the bulwarks. I’ve painted the remaining planks of the bulwarks seperately. Covered the contact surfaces with masking tape and handpainted with Humbrol enamel matt paint.  Again used white glue(PVA) for glueing.
    Sanded the corners off which needed some touchup afterwards.
     

    For large and more detail photos see also:
    http://www.flickr.com/photos/ilhan_gokcay/sets
    Best go into the set and choose slideshow or

    http://www.flickr.com/photos/ilhan_gokcay/sets/72157626433922489/detail/?page=46

     

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  2. Hi Keith,

     

    Basically Fe(III)Cl is used for dissolving copper to make PCB's(Printed Circuit Board)  http://en.wikipedia.org/wiki/Iron%28III%29_chloride#Industrial

    The reaction should be (FeCl3 + Cu → FeCl2) + CuCl) and (FeCl3 + CuCl → FeCl2 + CuCl2)

    I works with brass but I don't know the reaction.

     

    There is an alternative which is Ammonium persulfate for dissolvig copper (again used to make PCB's) . I did not tried this for brass, I think it should work.

    While dissolving copper this solution gets blue.

      

    Fe(III)Cl stains everything and never comes off. Ammonium persulfate seems to be more safe regarding the stains and also does not need heating.

  3. Hi Keith, you're welcome and thank you very much. 

     

    I used a program called "Adobe Illustrator". I made the drawing by hand, scanned  and redrawn(with points) with the program. The program allows me to put points and automayically connects them. It is also possible to move the points afterwards. The drawing as background I made as much points as possible to create the same shape.

     

    You described the process exactly as it is. The blue paper is called PNP(Press and peel) paper. The design should be printed on the flat side with a laser printer(ink does not work). Put upside down on brass and heated with iron so that it's transferred to the brass(toner+blue stuff). This print should be as sharp as possible and also dark. Take care while ironing that it does not slip. The solution to etch the unprotected brass is Iron(III)Chloride. Heated in hot water. 40-50'C is ideal but not crucial. For my parts it took 30 minutes to etch. It should be continiously stirred for a good result.  Nitro thinner is ideal to clean the nail polish and the PNP. At first it was not that easy, I made several trials to get a good result.

     

    And Keith I'm happy to answer any questions, it's never a bother.

  4. I’ve started to build the bulwarks on the fore- and aftercastle. To fix the stanchions at correct angles I’ve built two  casings to guide

    the structure and fixed these casings temporarily using the holes for the masts. I’ve cut the stanchions from pear strip and drilled the

    ends 0,7 mm (diameter of an ordinary pin). Using the guide casing I’ve marked the positions, drilled the deck, and glued the stanchions with CA.

     

    Ilhan Gokcay

     

     

     

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    For large and more detail photos see also:
    http://www.flickr.com/photos/ilhan_gokcay/sets
    (Best go into the set and choose slideshow)

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