Toner transfer no-soak, high-quality, double sided PCBs at home

Step 12: Process the through holes

1. Using a drill press or dremel to drill out the through holes.
2. Using the stranded wire, solder a jumper through all the holes.
3. Check the through holes with the meter.

I have experimented with a silver pen for the through holes. It worked OK, but many of the holes didn't survive the soldering phase. Conductive paint was too thick. Hopefully someone comes up with an easy process. Soldering them is time consuming but failsafe.

Update: I use liquid tin on the boards, but this Instructable shows another, cheaper DIY alternative. I'm not sure how suitable is it for fine traces like this board.

Comments

[AlexHenrique]

I put soldering flux on the board and use tin with clothes iron on top of the PCB after etching, but before drilling. The board is completely thinned.

[AlexHenrique]

You can see the process here and the next photos:

http://www.flickr.com/photos/24143380@N08/7448711054/in/photostream

[dustinandrews]

Consider taking some photos and make an Instructable. :)

[Agent24]

I would also like to know what process of tinning you are talking of... it sounds rather interesting!

[richardrrr]

What sort of tin?

[ls1244678]

You mean tinned, right? Can you elaborate?