Re: Boeing deep holes on the lathe.


<Paul@xxxxxxxxxx> wrote in message
news:mcb713hoh72nt8puqa6r13v3irm82bion6@xxxxxxxxxx
snip-----

On a differebnt thread somone suggested making an aluminum
blank and plating copper over it then disolving the aluminum with
hydracloric acid.... thoughts on that?

Paul

Hydrochloric acid? I'd not suggest that idea.

Plating is rarely accomplished uniformly. Assuming you could plate thick
enough to machine the exterior once you have a wall thickness that would be
to your specifications, removing the aluminum core by acid wouldn't be a bad
idea, but I'd suggest sulfuric acid, not HCL. Copper is insoluble in
sulfuric, although copper oxides are not. HCL will dissolve the copper
as well as aluminum, albeit at a slower rate.

Harold


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