On a sunny day (Mon, 25 Jun 2018 15:12:16 +0000 (UTC)) it happened Martin
Gregorie  wrote in :

>On Mon, 25 Jun 2018 15:42:14 +0100, Peter Percival wrote:
>
>> I think I want one with a straight conical tip and the soldering iron
>> that I already own has a tip which looks like a cylinder cut off at an
>> angle (does that make sense? If not, see
>> https://www.gearbest.com/soldering-supplies/pp_248246.html).  Any
>> recommendations?
>
>The best electronic soldering irons I've used have been 45 watt Wellers
>with conical 0.8mm tips - but they weren't cheap, but that was a while
>back. The current range are even more expensive and 90 or 120 watt irons.
>The best feature of the Weller range is that the temperature control is
>nearly failproof, being a magnetic microswitch just behind the tip. There
>is a magnet at the rear of the tip. Like all magnets, it loses its
>magnetism when heated to its Curie point: this turns the microswitch off.
>It turns back on again as the tip drops below the Curie point and regains
>its magnetism. IOW you specify a tip by the shape, diameter *and* the
>temperature you require.

I have used wellers at work and had one myself.
The mechanical switch that is controlled by that magnet causes RF interference
you do not want when working with sensitive RF equipment.
I do not like the build quailty of wellers much, mine fell apart in the end,
and WAY too expensive compared to what you can get with real adjustable
(need that!!) temperature control.
See my other posting for what I use .



>
>--
>Martin    | martin at
>Gregorie  | gregorie dot org
>

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