[modeleng] Re: Spinning
- From: "Tony Wells" <oaksfield@xxxxxxxxxxxxxxx>
- To: <modeleng@xxxxxxxxxxxxx>
- Date: Tue, 8 Aug 2006 20:48:13 +0100
Keith, check this link out as well :-
http://www.aardvark.co.nz/pjet/spinning1.shtml It is primarily about
building a lathe for metal spinning, but also gives some more general
information on it as well. I have a couple of other links buried in my wood
turning favourites - somewhere! I will post them too, if and when I can ever
find them. One of the woodturning supply shops does sell kits for making
such as spun metal cups for candle stick holders, so I will post that link
too, hopefully tomorrow when I can get to the catalogues out in the shop end
of the garage.
Tony Wells.
----- Original Message -----
From: "alan stepney" <alan@xxxxxxxxxxxxxxxx>
To: <modeleng@xxxxxxxxxxxxx>
Sent: Tuesday, August 08, 2006 7:06 PM
Subject: [modeleng] Re: Spinning
> Ahhh, spinning is a technique for turning nice new pieces of metal into
> something resembling a pretzel in a few microseconds.
>
> The most common use is for turning flat sheet into, say, a bowl shape, and
> as that may be easier to follow, ,
>
> Firstly, ANNEAL the metal. That is essential. Then mount it firmly in the
> chuck, with just the amount that is to be shaped protruding.
> Then one needs to press against the inside with a round-ended tool whilst
> the lathe is turning, , so that the metal distorts, and forms into the
> bell
> shape. When I say "round ended", about the best is a ball from a ball
> race,
> soldered into the end of a piece of tube. Alternatively, well round the
> end
> of a piece of silver steel, and polish it well before use.
> You can only make a small change before having to anneal the metal again,
> so
> usually it takes several goes to get it to the shape you want.
>
> A template of the shape required is worth making to check progress.
>
> Spinning is an art which takes practice, and it may be best to try it on a
> piece of sheet first. Perhaps make a small bowl out of it. For that, turn
> a
> wodden former to fit into the lathe, and screw a piece of sheet to it.
> (copper is easiest, then brass, but most metals can be spun.)
> Then, using the ball end, press against the sheet, working from the inside
> out.
>
>
> Alternatives, if or when things go wrong, are to turn a piece of hardwood
> or
> aluminium to the required shape and, again after annealing, hammer that
> into
> the end of the petticoat pipe.
> Or, turn it from solid, doing the inside first, and then turning the
> outside, VERY carefully.
>
> Alan
> ----- Original Message -----
> From: <Gmx22@xxxxxxx>
> To: <modeleng@xxxxxxxxxxxxx>
> Sent: Tuesday, August 08, 2006 8:28 AM
> Subject: [modeleng] Spinning
>
>
> HI ALL, Simplex is well on the way but have no idea what spinning is.
> It refers to the petticoat pipe "bell the end out by spinning" im sure
> that
> you all know what this means but i have not got a clue! Any help Please
> Keith
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