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  • #16
    Re: Roasting in Aluminium? -

    Well Lindsay, to date you have attacked individuals and done nothing more than cite commercial websites, without providing your own personal views on the matter.

    If you have any Id be interested to read them.

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    • #17
      Re: Roasting in Aluminium? -

      I seem to remember that the aluminum found in the brain tissue was never shown to be the cause of the disease. At the same time, if aluminum has been shown to store in brain tissue, why use it for food preparation?

      I will say that my wife and I do not cook in aluminum nor use any coffee making equipment with aluminum that is in contact with the water nor the coffee. Neither do we ever microwave in plastic.

      In regards to coffee equipment with aluminum parts, there is one good reason to not use it. It can be a pain to clean because the common cleaning agents made for coffee equipment are not at all good for aluminum. It is very easy to clean the drum of the Hottop. Soak it in a hot solution of TSP or equivalent and it is like new again... offered as an example only.

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      • #18
        Re: Roasting in Aluminium? -

        RIGHT! Which one of you naughty boys stole AMs shtick? ;D

        My mum used to cook Tea Cake in an Aluminium pan. I am naturally horrified by this many years later because I would have prefered Coffee Cake! I now have to live with the consequences of these tarnished memories.

        Left field out!

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        • #19
          Re: Roasting in Aluminium? -

          Originally posted by 5653545E495B43485B3A0 link=1280727822/13#13 date=1280760706
          2MCM,

          You removed the guts out of my post, deleted a great swag
          Just to set the record straight here, I did not edit nor delete a single post of yours Lindsay. You did however manage to gain the attention of most of the mod team.

          I have had a hearty gut full of this thread, so Ill see you when I next need something from Cut price potsn pans r us :

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          • #20
            Re: Roasting in Aluminium? -

            Originally posted by 0C534B5D565D5158585B5B535F503E0 link=1280727822/18#18 date=1280785601
            Originally posted by 5653545E495B43485B3A0 link=1280727822/13#13 date=1280760706
            2MCM,

            You removed the guts out of my post, deleted a great swag
            Just to set the record straight here, I did not edit nor delete a single post of yours Lindsay. You did however gain the attention of almost the entire mod team.

            I have had a hearty gut full of this thread, so Ill see you when I next need something from Cut price potsn pans r us :
            Then for being wrong about the phantom editor I sincerely apologise to you 2MCM.

            To Dennis, I did not intend to attack any individual but I do reject falsehood and what I perceived to be commercially motivated spruiking, erroneous denigration of broadly competitive legitimate alternatives.
            Perhaps I have misjudged the motivation of others and the CS website also.

            I am interested in the facts and if I have misjudged the facts or issues then clearly I am in error.

            The facts regarding the toxicity of aluminium is that the hazard is close to zero, which i not the case with all metals in current roaster use.
            Suggestions that this is not so, must be motivated by something.
            My assumption/opinion was that the motivation were largely commercial and/or convenient ignorance. On this website is this regarded as OK? or is that also "Common knowledge"?

            Lindsay
            PS I also have had a hearty gut full of this thread, but perhaps I am now wiser in the ways of the world or at least the CS website (still happy to deal with facts they dont bite).

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            • #21
              Re: Roasting in Aluminium? -

              Well Lindsay we seem to agree so I dont understand what all the drama was about and I certainly woudnt continue to spray my armpits with the stuff if I were concerned.

              As mentioned earlier, I just dont like the taste it can impart.

              In regards to "commercially motivated spruiking", again I dont understand how you thought that, when I said:

              Originally posted by 6B4A4141465C2F0 link=1279884970/3#3 date=1279888407
              Its cute and I love these sorts of gadgets.
              Originally posted by 303532382F3D252E3D5C0 link=1280727822/19#19 date=1280791346
              Perhaps I have misjudged the motivation of others and the CS website also.
              Yes, I think so. Thankyou for the quasi apology.

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              • #22
                Re: Roasting in Aluminium? -

                After the preceding not sure if it worth getting back to Javmads question  :

                Aluminium has some issues to contend with, thermal conduction is excellent so it will roast very evenly.

                Thermal expansion is BAD so if you make a drum roaster in the normal arrangement then you will have to take that into consideration as you are likely to have binding issues between the ends and the faces of the drum area.  I havnt done any numbers but the clearance may be such that beans may get jammed between the drum and face. Also applies to some other roaster styles.

                The other problem longer term will be one of Aluminium Creep caused by exposure to high heat and loads, that will be likely to cause the drum to deform over time. This problem can be mitigated by making heavier walled drums and using different alloys to some degree.

                There is also the issue of cost and machining and welding complexities over other alternate materials.

                Like Dennis mentioned above I have had aluminium taint or other metallic taints from time to time from Aluminium cookware so if it were me I wouldnt based on this and the other items mentioned above.

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                • #23
                  Re: Roasting in Aluminium? -

                  Originally posted by 5354505F575D48585F56310 link=1280727822/21#21 date=1280799190

                  Thermal expansion is BAD so if you make a drum roaster in the normal arrangement then you will have to take that into consideration as you are likely to have binding issues between the ends and the faces of the drum area.  I havnt done any numbers but the clearance may be such that beans may get jammed between the drum and face. Also applies to some other roaster styles.
                  bit OT but

                  I was thinking about thermal expansion in general after looking at a few ideas on HR, and if you were building a roaster you would need to take it into consideration on any metal. I would want the "gap" at cold and then it "expands" when hot. that way when you preheat the gap closes up and no crushing beans.....

                  a few of the designs on HR build in some expansion (or adjustment)

                  can any one with a commercial roaster tell us if there is much expansion in their roaster drum and how is it managed?

                  back to the ally / copper / metal debate.

                  it actually crossed my mind as to what sort of copper they are using in the other "baby" roaster and is it high quality. many coppers have a content of other metals, silver, gold, nickle, cobalt, LEAD etc. depending on where the raw product is coming from. Lead (and nickel / cobalt) being the really bad one.... and also what chemical reactions may be happening in a copper roaster but of course ally has a number of issues as well as discussed above.

                  either way i reckon the quantities that we would be exposed to would have little impact on most home users compared to what other chemicals we ingest on a daily basis, caffeine included .

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                  • #24
                    Re: Roasting in Aluminium? -

                    Still OT but that is in part why the drums on commercial roasters are Cast Iron or Carbon steels. 300 series S/Steels suffer from thermal conductivity and expansion problems too but 410 Stainless is very similar to Carbon steels so it is a good one.

                    On Copper or Brass it is very common to Tin line these when they are in contact with foods as Tin is non toxic.

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