[TheForge] A different needle question, tempering

[Susan and Lynn Lang]

Hello
When I build replacement hands for clocks I use an old mainspring, anneal,
file to shape, harden, clean. To temper, place the hand on a piece of 1/4
by 3/4", heat from below until the hand is the color you want, quenchŠŠ.

lynn  

On 10/22/13 2:20 PM, "Paul N" <crosspein at sbcglobal.net> wrote:

>How about getting one of those cheap H-F non contact thermometers
>Then heat up something more massive to the desired temp and place the
>needles on there for 15 minutes or so?