On Wed, 30 Jan 2008 09:34:29 -0600, Ignoramus19508
wrote:

:On 2008-01-30, Ross Herbert wrote:
:
: Your desoldering tool (like most) is probably fitted with a small diameter
tip
: (approx 0.8mm - 1.00mm inside diameter)
:
:Yes.
:
: designed for sucking solder from around small gauge component leads
: and IC pins where the tip make full peripheral contact with the
: board. When the solder melts around a pin all the air passes solely
: around the lead and maximum effect is achieved inside the through
: hole.
:
:Well, it does this pretty well with a real vacuum pump attached
:instead of the "desoldering station pump".

Yes, of course it will. But the desoldering station pump is NOT a specialised
1/3HP vacuum pump. It is designed as being adequate to suck solder from around
component pins ONLY when the nozzle completely surrounds the lead AND make 100%
peripheral contact with the pcb solder pad.