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    2130kg per cubic meter. That is about right. That...

    2130kg per cubic meter. That is about right. That is how the industrial suppliers indicate density. Industrial applications also buy the stuff in those large quantities. That would mean your 25kg bag...
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    I have also done an audit in a German auto engine...

    I have also done an audit in a German auto engine plant, and the level of process control which is now standard in these industries really is impressive. In my home casting, I only just made a...
  3. It is. Must have cost a fortune new. ARO had a...

    It is. Must have cost a fortune new. ARO had a sales office on the Opera Ring in down town Vienna back then. I think the only sales show rooms still in that area are jewellery, expensive dresses, and...
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    Are they sure that is a boxford? It looks like it...

    Are they sure that is a boxford? It looks like it was made in the 20's whereas Boxford only got started just before WWII.
    Whoever ones it obviously looks after it. It can't be easy to keep rust...
  5. 1952 Drill press. Made in Vienna. Fantastic...

    1952 Drill press. Made in Vienna.
    Fantastic machine. Glad I restored it. The 330W 3phase motor, has much bigger Watts than the 370W Chinese drill press I was using before :) It runs really smoothly...
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    Sorry for the Threadjack MP, I have move the...

    Sorry for the Threadjack MP, I have move the aviation casting discussion to it's own thread.
    http://www.alloyavenue.com/vb/showthread.php?12748-Casting-in-aviation
    Mark
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    My experience is as an authorities certification...

    My experience is as an authorities certification inspector, so I only critique/accept/reject and audit the substantiations I see, rather than having real practical experience of having done the work...
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    Casting in aviation

    Rather than further thread jack MP' thread about the effect on Young's modulus of casting defects, I thought it better to start a specific thread about casting in aviation.

    Foundry Joe brought up...
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    Since it came up, in aviation, we require...

    Since it came up, in aviation, we require additional factors of safety with castings, due to the inconsistencies inherent in the process.

    For example, for a casting used in critical structure of a...
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    Sticky: Is the season over? Did you win?

    Is the season over? Did you win?
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    Without photos, it didn't happen. :) Mark

    Without photos, it didn't happen. :)
    Mark
  12. Outstanding work. Mark

    Outstanding work.
    Mark
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    Yep. LOX plus RP-1 which is kerosene. Mark

    Yep. LOX plus RP-1 which is kerosene.
    Mark
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    I think my favorite bit is at...

    <Schadenfreude>
    I think my favorite bit is at 1:20 when the Facebook satellite ended it's relationship with Space X and plunged to it own spectacular demise.
    </Schadenfreude>

    Mark
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    Depends. Melt temperature is basically going...

    Depends.

    Melt temperature is basically going to be dependent on heat input, minus heat lost. If you shove in the heat fast enough, the insulation is irrelevant. This is inefficient use of fuel,...
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    A second vote for a single phase to 3ph VFD....

    A second vote for a single phase to 3ph VFD. Gives you the added advantage of speed control, push button reversing etc. Much nicer solution than a 3rd leg cap.
    Mark
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    There is a guy on Practical machinist who has...

    There is a guy on Practical machinist who has been hand scraping in the bed of a DS&G 17, and it is a huge job. Understand you passing on that.
    Mark
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    The manufacturers firing curve for the refractory...

    The manufacturers firing curve for the refractory hard face I used was also about 40 hours. The recommendation is probably based on a six inches thick hard face , backed up with 10" of brick work in...
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    While in the Air force, I did a few weeks work...

    While in the Air force, I did a few weeks work during a vacation, helping my Dad do maintenance at a chip board factory during a shut. I was impressed by the safety systems in place at that plant,...
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    A DS&G 13x42. Wow, a wonderful machine. The Rolls...

    A DS&G 13x42. Wow, a wonderful machine. The Rolls Royce of lathes. I'll keep my fingers crossed that you get it for a song. Buy your wife some flowers :)
    Mark
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    Rocco and Steve, it is a nice sentiment those...

    Rocco and Steve, it is a nice sentiment those Indian guys are pros and know the risks and consequences and are therefore safe, but that opinion is flawed.

    The fatique and exhaustion of working...
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    You see the guy holding the ladle swinting. Hello...

    You see the guy holding the ladle swinting. Hello cataracts? The bare feet combined with the flow of iron along riverlet in the floor makes my hair stand on end.
    Mark
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    In our grandparents generation, you would in the...

    In our grandparents generation, you would in the second year of you apprenticeship at the foundry. Try and ask your local fire department if they have an old jacket, gloves, Helmut, overtrousers etc....
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    Welcome Alcufe. For aluminium, Bunsen burners...

    Welcome Alcufe.

    For aluminium, Bunsen burners like this are a good choice. Not electrics, no compressor needed, just the gas bottle. Clean and easy.

    What sre cou planning for a furnace?

    MArk
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    There is plenty of psuedo science on the...

    There is plenty of psuedo science on the internet. Regardless how you build the burner, you have to deliver roughly 15:1 air fuel mixture by mass for propane and light oils, and then fine tune the...
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