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1/96 Project 1710 Beluga

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  • 1/96 Project 1710 Beluga

    I have a new chunk of tooling board and lots of time!
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  • #2
    http://archive.attaches.forums.a0z.r...25f89f1786.jpg

    Might be helpful....

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    • #3

      Vielen Dank Herr Doktor.

      Comment


      • #4
        Beautiful drawing. Thank you, Doctor.

        David
        "... well, that takes care of Jorgenson's theory!"

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        • #5
          Casting, casting, casting;
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          Etching, etching, etching;
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          New etching technique. If it works I'll explain. Looks promising at the moment. (The many grills are for the Delta, by the way)

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          • #6
            Success ... almost. The registration from back to front side was a hair out.

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            • #7
              I have found that the critical part of this etching process is the laying down of a clean, consistent coating of photo resistant paint onto a clean, scrubbed brass sheet. Not as easy as it sounds; believe me. The results so far are OK but not perfect. The paint tends to ball up and sit in blobs on the brass surface. Its also very easy to apply too much paint. Getting just the right, thing and blemish free coating is very difficult. However, I have now found a company in the UK that sells pre finished, coated brass specifically designed for etching. This stuff comes in 250 x 250 mm sheets, 0.3 mm thick and coated on both sides with positive resist film. That means that normal artwork in black and white will work with them. They use a propriety developer and Feric Chloride as an etchant. Interesting.

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              • #8


                Originally posted by HardRock View Post
                I have found that the critical part of this etching process is the laying down of a clean, consistent coating of photo resistant paint onto a clean, scrubbed brass sheet. Not as easy as it sounds; believe me. The results so far are OK but not perfect. The paint tends to ball up and sit in blobs on the brass surface. Its also very easy to apply too much paint. Getting just the right, thing and blemish free coating is very difficult. However, I have now found a company in the UK that sells pre finished, coated brass specifically designed for etching. This stuff comes in 250 x 250 mm sheets, 0.3 mm thick and coated on both sides with positive resist film. That means that normal artwork in black and white will work with them. They use a propriety developer and Feric Chloride as an etchant. Interesting.
                Sounds like surface tension was your problem. Treat the raw sheet with a soaking in lacquer thinner and while in the bath, scribbing it with a steel-wool or other type abrasive pad. Remove from bath, blow down and don't touch it with your greasy, nasty fingers! It'll now permit the photo-resist to flow evenly without clumping up or evidencing 'fish-eye'. Warm up the photo-resist before brushing it on the sheet.

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                David
                "... well, that takes care of Jorgenson's theory!"

                Comment


                • #9
                  I'll give it a go and report back. Thanks.

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