[R-390] Desoldering part 2

[David C. Hallam]

If you go to your local craft store such as Michael's.  In the section 
where they have tools and supplies for beaders, you will find some very 
nice wire cutting and bending tools.  Beaders use them and they are made 
to cut hard wire.. I use those from Beadalon.  They will cut memory 
wire, SS, and other hard wire.  They probably wouldn't cut spring wire.  
They cost about $12-$15.

David
KW4DH


On 11/7/2013 2:28 PM, Charles Steinmetz wrote:
> W. Li wrote:
>
>> Standard procedure is to heat and unwrap using needle-noses and 
>> dental picks. This puts a lot of stress and torque on the post, and 
>> can fracture them, as we have seen. What I do, is first clip off the 
>> wrapped lead of the offending component flush with the post using a 
>> real sharp flush wire cutters, whose nose has been filed narrow.
>
> The turret terminals are so fragile, and such a pain to replace (if 
> you can even find replacements), that cutting the leads before 
> desoldering is mandatory.  Even if you don't know the part is bad, cut 
> the lead.  If afterwards it is too short to reattach, replace the part 
> even if it's still good.
>
> Cutting leads before desoldering is also very useful generally in both 
> point-to-point and PCB construction.
>
> If possible, it is helpful to unmount the terminal from the chassis 
> before unsoldering.  That way, you can't put any force on the fragile 
> insulator while you are wrestling with the wires.
>
> When working in close quarters, use scraps of glass-epoxy circuit 
> board material (or similar fireproof insulating sheets) to isolate the 
> joint you are working on so you don't accidentally burn other wires 
> and parts with your soldering or desoldering iron.
>
> Finally, troubleshoot with your meters and your brain, not with your 
> soldering iron, and this issue will not come up so often.
>
> "Oblique" or "angled head" cutters are extremely useful for reaching 
> into close quarters and clipping leads in both point-to-point and PCB 
> construction.  For example:
>
> <http://www.micro-tools.com/store/P-32728/Flush-Oblique-Front-Cutter.aspx> 
>
>
> <http://www.micro-tools.com/store/P-45821/Esd-Safe-Flush-Cut-Cutters-45.aspx> 
>
>
>
> Best regards,
>
> Charles
>
>
>
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