Homebrew PCBs

<speculation
Unless you had something blowing the molten solder out of the holes, 
I'd expect that the solder would wick into all of the holes. A wave 
solder machine fills the holes when there are leads present. Without 
the leads, I'd expect that to still occur.

Without solder mask, I'd also expect you'd get a lot of shorting of 
adjacent traces even with a very wide separation between them.
/speculation>

Somebody makes a chemical solution that does what you're looking 
for. IIRC, it's called 'Tinnit'.


Regards, Bob


--- In Homebrew_PCBs@yahoogroups.com, "Stefan Trethan" 
<stefan_trethan@g...> wrote:
> Hi,
> 
> 
> just wondering, a small wave soldering machine, would it tin a 
board  
> without soldermask properly so it can be populated or would the 
solder  
> tent the holes? How would the minimum spacing be to avoid bridges, 
without  
> mask?
> 
> 
> ST