zindazenda wrote:
no..on investugation this looks well abit crap..i cant see how it is going
to work with 100 sm 0805 components..
so anyother ideas..
can one buy flow soldering equipment s/h???
g0zen..
"Allan Butler" wrote in message
news:ALRjc.5600$Rd4.566539@attbi_s51...
What I have done in the past is to tin the pads where the parts are going
to be mounted and then I use two soldering irons. One on each pad and it
pulls the part right down into a good position.

Ok ok I hear the question now. What about parts with more than two leads?

That is a valid and good question. Only tin two pads for that part and
use
the soldering iron on each one of the pads to get the part mounted and in
position to finish soldering the rest of the leads one at a time.



For many irons, you can also buy fork-ended solder tips that bridge over
the parts. I made one by cutting and filing an old tip, and it worked OK
for parts removal. However, it would need some co-ordination to make the
tip contact the two pads without also knocking the part out of place.

The toaster oven looks like a much better method for a whole-board
assembly project, except for two key problems:

1. Solder paste is expensive

2. Solder paste doesn't keep (seems to have about the same time constant
as Horowitz & Hill's wet fish)

Those are big problems for occasional, low-volume users such as
ourselves. So the questions a

1. Where's a low-cost source of solder paste? (in various parts of the
world)

2. How can we either store it so it stays fresh; or re-constitute it
after it's gorn orf?


--
73 from Ian G3SEK 'In Practice' columnist for RadCom (RSGB)

http://www.ifwtech.co.uk/g3sek