Homebrew PCBs

--- In Homebrew_PCBs@yahoogroups.com, Stefan Trethan 
<stefan_trethan@g...> wrote:
> 
> > Of course, my question is where to get low cost solder paste ?
> >
> > Dave
> >
> 
> nowhere. i have to pay eur10/syringe.
> 
> 
> i wonder if the paste separates from the nozzle so uniformly that 
you get 
> the exact
> same amount on each pad.
> 
> ST


This is one of those things you find out about machine control.

with some practice, you find that by being 0.5mm from the pcb, and 
starting the paste to flow and presising the syringe 0.1mm, that some 
exact amount is dispensed.

this will be repeated on every occurance.

One thing that comes to mind is the surface adhesion.  If the paste 
does not adhere to the surface, it will not stick and the next pad 
will get double.

But, each of these things are things you can control.

Dave