On Wed, 3 Sep 2003 08:26:48 +0100, Mike Cowlishaw <
mfcowli@...>
wrote:
> I've found that a very fast and reliable way to solder SMT resistors is
> as follows:
>
> _______ Wire
> / \ hoop
> / \
> / |
> | |
> | |
> +--+---------------------+
> | |
> | Wood block |
> | |
> +------------------------+
>
very nice idea. i will try it.
another thing i often make:
when i have to do rapairs on smd ressitors etc.
and can't find appropriate tools to hold them (i know they must be
somewhere ;-) )
i often use a piece of wire, more often a 1/4 watt wired resistor and
solder one end to the smd part.
(needs not to be a good joint, just glued).
then you have a handle on the smd part, which you use to hold it while
soldering the other pad.
(maybe tin the other smd parts end or pad)
when the other pad is solid just remove the "handle" and solder it.
you have to take care that you don't pull off the metal on the resistor
with your handle.. but not too difficult..
this is a bit more work but you can place it very precise.
i never use solder paste, it is too expensive.
i worked with it one time, using a pneumatic dispenser.
it had a footswitch and a syringe like dispenser on a hose.
but you are right, bad or too much paste causes the parts to "drift away"
in the oven.
i don't like it because it is so expensive.
any ideas how to make the paste at home?
i heared by electrolytical plating you can make very fine powder if you
shake the electrode during plating?
would this work with solder?
anyways the dispensers are too expensive and i can solder well with the
wire.. no need for paste.
i once saw a soldering iron where the tin was applied automaticly through
the tip.
it was used to solder d-sub connectors (one hand holds the iron, the other
the wire, plug fixed in holder.
footswitch for solder start/stop.
i think only solder was dispensed, flux was put on the wire/plug i guess.
that interested me very much to build, it would be a great help to have one
hand free.
but i have no idea how to make this.
you can't transport the solder liquid, the whole hose would need to be hot.
you can't transport powder or wire too... it would melt at the tip and
block it or not?
i really wonder how this is possible... please discribe if you know...
st