[Diy_efi] DIY-WB construction & testing... help

[efi_student]

Don't waste a lot of money on specialized cleaners that are either
marginal or just plain expensive.  If you are using conventional rosin
cored solder, isopropyl alcohol or denatured ethanol work just fine.  We
used to buy denatured in 5 gallon cans when I worked on an electronics
bench every day.  Splash and scrub a little with a stiff brush (we used
to get plumber's flux brushes and clip them off at about 6mm from the
root).  Joints should be brilliantly silver and shiny, if not, they
could be "cold" joints and highly resistive.  Cold joints should be
reheated, and if still appearing dull after reheat, should be refluxed
and reheated.  I have seen MANY failures from cold solder joints.

Lance



-----Original Message-----
From: diy_efi-admin at diy-efi.org [mailto:diy_efi-admin at diy-efi.org] On
Behalf Of Bruce
Sent: Wednesday, July 19, 1995 5:28 PM
To: diy_efi at diy-efi.org
Subject: Re: [Diy_efi] DIY-WB construction & testing... help



----- Original Message -----
From: "Andrew Brownsword" <asword at telus.net>
>Can flux cause shorts?

Once upon I time I used fluxs.  Now only on heavy guage wiring harness
type work.  They can etch the board, They can cause high resistance
*traces* These resistances can vary with temp., and yes I was using non
acid versions. Some electrical supply sources sell areosol neutrilizers,
and cleaners. I've had consistant good luck just using regular flux type
solders, Kester being the only one I use now.  The archives have some
other opinions about solders Bruce



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