[modeleng] Re: Any knife makers on the list?
- From: "Pendragon" <idpriest@xxxxxxxxxxxxxxxx>
- To: <modeleng@xxxxxxxxxxxxx>
- Date: Sun, 1 May 2005 10:42:42 +0100
Al,
Tempering to about 200 ~ 220 deg centigrade should be about right [pale
yellow ~ pale staw colour]. The time / temperature rule is I hour per
linear inch but for thin sections apply the rule to the thicknes ie] for =
a
knife blade say 0.125 thick, time at temp would be 0.125 x 60 =3D =
7.5mins.
If you go for the sand bath method you must allow extra time for the =
sand to
come to temperature.
When you have decided what method to use I'm sure the listees would like =
to
know the results.
Regards, IP
"Life should NOT be a journey to the grave with the intention of =
arriving
safely in an attractive and well preserved body, but rather to skid in
sideways, Champagne in one hand - strawberries in the other,=20
body thoroughly used up, totally worn out and screaming WOO HOO - What a
Ride!"=20
=20
Priest & Sons Model Engineers
http://www.kinvermes.pwp.blueyonder.co.uk/p1.htm
-----Original Message-----
From: modeleng-bounce@xxxxxxxxxxxxx =
[mailto:modeleng-bounce@xxxxxxxxxxxxx]
On Behalf Of Allen Messer
Sent: 30 April 2005 22:25
To: modeleng@xxxxxxxxxxxxx
Subject: [modeleng] Re: Any knife makers on the list?
At what temperature and length of time should it be
baked in its bed of Sand?
Al
--- Pendragon <idpriest@xxxxxxxxxxxxxxxx> wrote:
> Al,
>=20
> It is important to temper the blade in a unifom way,
> one way this can be
> achieved is by placing the article in a tray of sand
> and then heating in =3D
> the
> domestic oven [it follows to do this when Erine is
> out having some =3D
> retail
> therapy]by heating in this way temperature gradients
> are avoided thus
> providing an even temperature.......you could do
> this whilst cooking the
> Sunday roast........what is important is to control
> the rate of
> heating....'food' for thought perhaps.
>=20
> Regards, IP
>=20
> "Life should NOT be a journey to the grave with the
> intention of =3D
> arriving
> safely in an attractive and well preserved body, but
> rather to skid in
> sideways, Champagne in one hand - strawberries in
> the other,=3D20
> body thoroughly used up, totally worn out and
> screaming WOO HOO - What a
> Ride!"=3D20
> =3D20
> Priest & Sons Model Engineers=20
> http://www.kinvermes.pwp.blueyonder.co.uk/p1.htm
>=20
>=20
> -----Original Message-----
> From: modeleng-bounce@xxxxxxxxxxxxx =3D=20
> [mailto:modeleng-bounce@xxxxxxxxxxxxx]
> On Behalf Of Terry Lane
> Sent: 30 April 2005 22:04
> To: modeleng@xxxxxxxxxxxxx
> Subject: [modeleng] Re: Any knife makers on the
> list?
>=20
>=20
> I seriously doubt if you could get a good temper in
> a kitchen oven Al.
>=20
> I generally heat the tang with a torch & watch the
> colours run. You =3D
> could
> also try laying it in a shallow tray of tallow and
> burning the tallow =3D
> off
>=20
> > If there are, I need some advice. Someone posted
> on a
> > list sometime in the past about "Drawing the
> temper"
> > of a knife blade after hardening it by baking it
> in
> > his wife's Kitchen oven. Problem is, I forgot to
> make
> > a note of the temperature or the length of time
> which
> > it was baked. Can any of you help out?
> >
> > Al Messer
> >
> > __________________________________________________
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