Microblasting - anyone done it??

[Paul]

Hi all,
Anyone done any microblasting on PCB's at all to remove resist or areas of corrosion (such as damage from leaky batteries)???

After any tips and/or advice on media and hardware to use. I have a 100L compressor at my diposal, so air isnt a problem

Cheers
Paul

 

[Vimtoman]

Your better off using an acid like vinegar or lemon juice to nuetralise the battery deposit.
Brush of residue and do it a few times.
Then clean with water or isp alcohol

Oh and try and localise the area ,dont clean areas with acid that dont need it

 

[Paul]

Yeh get that, however several boards i have (not all pinball) have damage, and want to eradicate any trace and clean back to the tracks before fix and re-sealing

I could use (as i have been) a fibreglass pen, however this seems quicker and more thorough

 

[Vimtoman]

The via's are your main problem as the residue can sit and eat away inside the hole.
Under IC's also.