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  1. Member Since
    Jan 2009
    Messages
    462
    Mar 12, 2009, 7:08 PM - Re: The 'Ideal' Obi ANH Derwent Interconnect Replica #226

    HOw do you get accurate looking marks without making it look like paint? I thought about trying to get a metal piece to rub around mine when I get it back from being weathered from Bobadebt.
  2. this space left blank RPF Premium Member James Kenobi 1138's Avatar
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    Feb 2002
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    Dallas Texas
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    Mar 12, 2009, 7:50 PM - Re: The 'Ideal' Obi ANH Derwent Interconnect Replica #227

    Peacefrog35 said: View Post
    HOw do you get accurate looking marks without making it look like paint? I thought about trying to get a metal piece to rub around mine when I get it back from being weathered from Bobadebt.
    It's paint. I just use patience and trial-and-error.
  3. Serafino's Avatar
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    Mar 12, 2009, 8:01 PM - Re: The 'Ideal' Obi ANH Derwent Interconnect Replica #228

    FB--to match the finish on your original one would want to bead-blast.

    What dcarty did is the best match anyone's found yet for the very matte finish on my original, which to my eye is also a best fit for the top face of the flange on the prop.

    As to the scoring, on some originals that scoring has depth, to get that I guess you'd have to shove your balance pipe in one end of a pipe bomb and let 'er rip.

    GAH! The new smileys really are horrible.
  4. TridCloudwalker's Avatar
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    Sep 2002
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    York, PA - USA
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    Mar 12, 2009, 11:06 PM - Re: The 'Ideal' Obi ANH Derwent Interconnect Replica #229

    Peacefrog35 said: View Post
    HOw do you get accurate looking marks without making it look like paint? I thought about trying to get a metal piece to rub around mine when I get it back from being weathered from Bobadebt.
    I did some experiments with mine using a simple candle flame. The vaporized carbon coming from the burning wick left a REAL nice sooty black coating on the pieces. It comes off quite easily though, so it would have to be clear coated, but it makes the lighter colored scratches easier to scrape in for the "dented" look of the bottom of the pipe.
  5. Ripcode's Avatar
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    Jun 2006
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    Muskegon, MI
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    Mar 26, 2009, 8:16 AM - Re: The 'Ideal' Obi ANH Derwent Interconnect Replica #230

    Serafino said: View Post
    dcarty got an awesome matte finish on his by carefully blasting with fine media. I'd be happy with the results he got.


    So a blasted finish would look accurate? I found a place in town that will do walk-in blasting at a very reasonable price.
  6. Serafino's Avatar
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    Mar 26, 2009, 12:02 PM - Re: The 'Ideal' Obi ANH Derwent Interconnect Replica #231

    It depends on what media is used. dcarty used a very fine media very gently applied to get that finish.
  7. franz bolo's Avatar
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    Jun 2005
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    Mar 26, 2009, 12:37 PM - Re: The 'Ideal' Obi ANH Derwent Interconnect Replica #232

    TridCloudwalker said: View Post
    the "dented" look of the bottom of the pipe.
    Here's a closeup of a real BP and at the top is the prop. I think the dented look is just glue blobs. It's thick and I can't see it denting.



    FB
  8. Member Since
    Jan 2016
    Messages
    504
    Mar 8, 2017, 9:15 PM - Re: The 'Ideal' Obi ANH Derwent Interconnect Replica #233

    @Serafino and @parfaitelumiere @lonepigeon , and anyone else who may have done extensive investigation on the history of Obi-Wan's ANH Lightsaber parts....

    Did anyone ever discover which variety of Inconel was used by Rolls Royce to make the Balance Pipes?

    I Googled Inconel out of curiousity the other day in a "Day-Dream-Project" mindset and was surprized not only by how expensive Inconel is, but at how many metallurgical blends of Inconel there are! Were there so many varieties of Inconel back when the Derwent 8's and 9's balance pipes were made? And if the original is no longer available, which of the current alloys is the closest compostion to the original?
  9. RPF Premium Member mugatu's Avatar
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    May 2014
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    Ohio
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    Mar 9, 2017, 12:06 AM - Re: The 'Ideal' Obi ANH Derwent Interconnect Replica #234

    Not sure about the blends but Inconel is expensive to machine. It requires specific costly tools as inconel has to be cut with short stokes and quickly (meaning keeping contact time between the cutting edge and the inconel) from what I understand. You can't just keep going at it. Something in the crystal structure of it makes it respond erratically and negatively to typical tooling, processes, etc. Of course perhaps tooling and processes have changed and improved since then making it less cost prohibitive?
  10. RPF Premium Member Panaflex's Avatar
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    Apr 2010
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    Florida
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    Mar 9, 2017, 9:07 AM - Re: The 'Ideal' Obi ANH Derwent Interconnect Replica #235

    Interesting topic. I did some research on this when I got my BP and found out that Tesla uses inconel in their engines as well as Spacex in their rockets. Looks like Obi Wan's saber was pretty advanced after all.
  11. RPF Premium Member veektohr's Avatar
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    Oct 2015
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    Los Angeles
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    Mar 9, 2017, 10:09 AM - Re: The 'Ideal' Obi ANH Derwent Interconnect Replica #236

    Does it have very little size shift at high heat? It would make sense for small tight-tolerance parts in a situation like that to be made from a metal that won't expand and contract a lot.
  12. cboath's Avatar
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    Dec 2001
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    Mar 9, 2017, 12:40 PM - Re: The 'Ideal' Obi ANH Derwent Interconnect Replica #237

    there's also a matter of which inconel it is, or if it was incoloy...

    I actually ran into a timeline of inconel's and incoloy's at work yesterday, i'll have to see if i can find it.
  13. Member Since
    Jan 2016
    Messages
    504
    Mar 9, 2017, 1:07 PM - Re: The 'Ideal' Obi ANH Derwent Interconnect Replica #238

    Well, I sent an inquiry via email to Wiggins in the U.K., we'll see if they respond. I've learned they developed Inconel, but I don't know if that's where Rolls Royce purchased their Inconel from.

    Fingers crossed for specific information regarding the type of Inconel used in the Mk8 and Mk9 balance pipes!!!
  14. Member Since
    Jan 2016
    Messages
    504
    Mar 9, 2017, 1:31 PM - Re: The 'Ideal' Obi ANH Derwent Interconnect Replica #239

    O.K. letter in to Rolls Royce as well. We'll see what responses I get soon I hope!

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