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    Low volume or single piece photoetching
    by Spock66 πŸ‡¬πŸ‡§ ( Chief Petty Officer 2nd Class)
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    22 Posts 21 Replies 11 Photos 35 Likes
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    Spock66
    Chief Petty Officer 2nd Class
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    Hi All,

    So onwards!

    Picture shows super clean brass sheet, just basking in some washing up liquid water - to keep it wet.
    Then, in line with the 'How to' we applied some photo sensitive sheet, then laminated it.

    The other picture is showing the brass sheet after placing it into the plastic pocket (a la 'how to')
    and exposing it for 65 seconds. If you zoom in you can even make out the fine grid lines from the mask.!

    Next we'll go on to developing - get your washing oxy powder ready!
    1
    figtree7nts
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    Hi Andy,

    No worries mate!

    Cheers, Ed
    1
    "Fair winds calm Seas" 73's
    Spock66
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    Hi Ed,

    Many, many thanks for the thread link. Couldn't make it automatic, so very grateful for your assistance. Will contact stephen (Fireboat) to explain goof and ask him to remove it.
    Again cheers
    AndyπŸ‘
    2
    figtree7nts
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    Hi Andy,

    We have tried to add a link to this thread in your (How To)!
    But, You will have to contact Stephen (Fireboat)!
    So that he can delete the (How to) you don't want!

    Cheers, Ed
    2
    "Fair winds calm Seas" 73's
    Spock66
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    While I'm trying to link to the 'how to' section, here is next step.

    So you've cleaned the brass, it's all shiny and ready to go - WRONG!
    See how the water has beaded up?
    You must degrease, wash, clean or whatever so that water forms a continuous sheet, without beads when you run water over the sheet.

    Andy
    2
    Spock66
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    Hi Martin,

    Tried at first and screwed up the original 'How to' - lost all links to PDF files and couldn't put them back!

    So created new 'How To' and although there is a button for files and photos, there is nothing to add a link (that I can see).
    I copied the model-boats.com/forum/77241 ready to paste it, but I'm blowed if I can work out how to paste it in and now there is a 'how to' with nothing in it apart from text that doesn't link to the pdf and one that does - trust me to screw up the Model Boats website.
    If someone can guide me how to get the link in, get rid of the now useless 'How-to' and show me where the link post place is I'll be over the moon!
    Many thanks

    Andy
    1
    Martin555
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    Hi Andy,

    I think if you open this thread then go to the top of the screen to the search bar it should read model-boats.com, click in that and it should then read https://model-boats.com/forum/77241
    Then click on it and when it is highlighted just copy and paste it in to the "How to"section.

    Let me know how you get on.

    Martin555.
    https://model-boats.com/forum/77241
    πŸ”—
    1
    If it looks right it probably is.
    Spock66
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    Hi Martin,

    Only problem is, I don't know how to do that!
    Any tips greatly appreciated.

    Andy
    1
    Martin555
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    Hi Andy,
    It will be worth placing a link to this thread in your "How To" guide.

    Martin555.
    1
    If it looks right it probably is.
    Spock66
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    Here we are again!

    First we cut the clear OHP into two pieces and overlay them exactly.

    Then, next picture we taped three edges and placed a clamp into it to show the pocket shape.

    Next we cut some 3mm brass sheet (see it will etch pretty thick stuff), notice the bent shape from cutting.

    Then we flattened the sheet and inside the pocket you can see how filthy the brass is.

    Now time for cleaning, we've done half in the pocket so you can see the difference.

    Time for major cleaning on both sides.
    1
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