I've heard the term 'crimping' used to describe what I do, but I
understand your meaning. I do fold the leads 90 degrees to lie flat on
the board and then cut them before soldering. I've never found this to
be a problem for desoldering. A good quality solder wick will suck up
all the solder and leave the wire easily lifted. (Is there a good video
on desoldering, I wonder?) Then again, I've done a lot of circuit board
repair, so maybe it's not as big a deal to me as to a novice. Replacing
a resistor or capacitor is isn't that difficult, especially if you have
a Panavise (http://www.panaviseonline.com) for holding the board. The
alternative is to make a 45 degree bend in the leads, cut them and
solder. The drawback to this technique is that you have to do one
component at a time.
Richard
http://www.pugix.com
Graham Atkins wrote:
> Richard,
>
> On 1 Mar 2009, at 15:50, Richard Brewster wrote:
>
>> I
>> always press leads all the way over to the board, so they are not
>> sticking up, but are lying flat. This is called crimping the lead to
>> the board. I'll crimp lots of parts, then cut all the leads, solder,
>> wash. They don't fall out, because they're crimped. I received some
>> kits from John Blacet with all resistors installed and crimped, but
>> not
>> soldered. They stayed in place during shipping.
>>
>>
> "Crimping" means forming the leads in some way. Some radial capacitors
> for example have the leads cut short and formed with a small "wave"
> which
> helps them to be pushed into the PCB and holds them whilst soldering.
> Just folding the leads through 90 deg to be flush with the board is
> not really
> crimping and also makes the component much harder to desolder and remove
> the component to change / repair.
>
> Graham
>
>