Homebrew PCBs

starsnstripes_2003 wrote:
> I'm not sure what boards or process your using, but there may not be 
> a need to coat the board if your using the positive resist boards. 
> 
> I haven't tried this, but Read at MG's site:
> http://www.mgchemicals.com/techsupport/photo_inst.html
> 
> "Removal of resist is not necessary when soldering components to 
> your board. By leaving the resist on, your circuit is protected from 
> oxidation. Tin plating your board is not necessary. When soldering, 
> the heat disintegrates the resist underneath the solder resulting in 
> an excellent bond."
> 
> I am using the $3.99 6" x 3" boards by GC currently, but I will try 
> next time to leave the resist on and solder through it. Then just 
> using a flux cleaner to remove the solder flux, I suspect the final 
> product might be very nice ;-)
> 
> Does anyone have a any home-brew flux remover formula?
> I need to know what will clean a board of rosin flux easily/cheaply.
> I am always looking for home-brewed concoctions as opposed to 
> aerosol cans!

A small amount of "super safewash 2000" brushed on with a paintbrush
dissolves the flux and you can rinse it under the tap with water
(it's water based and biodegradeble). You can get it in 1 Lt bottles.