Homebrew PCBs

----- Original Message ----- 
From: "Adam Seychell" <a_seychell@...>
To: <Homebrew_PCBs@yahoogroups.com>
Sent: Saturday, September 12, 2009 10:15 PM
Subject: [Homebrew_PCBs] developing immersion tank


> I'm wondering if developing photoresist in an immersion tank would be a
> good idea. Unexposed resist must be washed away with help from a moving
> brush or sponge. All professional developing machines use spray. I found
> the resist behaves a bit like clay stuck to the surface and it doesn't
> dissolve away when just rocking the PCB in developer solution.

I don't have any problems. The resist just dissolves in about 30 seconds, 
with a bit of agitation of the container. I use precoated positive resist 
boards.

Leon