Main > Main Forum
sandblasting a PCB?
Crazy Cooter:
--- Quote from: paigeoliver on March 12, 2005, 11:23:01 am ---...simply bought one of the jamma ones for $95.
--- End quote ---
Where? On ebay?
lokki:
Hi,
Check this article out. While it is mainly focused on Acid repair for Pinball MPUs.
the same process applies for your board.
http://www.repairconnection.com/acid_damaged_mpu.htm
Also http://marvin3m.com/bally/index1.htm
has the following to say
Bead Blasting.
A bead blaster is mearly a sandblaster, but instead of shooting sand, it shoots small ceramic beads. This is much gentler than sand. To bead blast a board, all the corroded electronic components should first be removed that are in the effected area. Then the board can be bead blasted (after bead blasting, the board should still be neutralized with vinegar, as discussed below). Finally, new components are installed to replace the old ones.
Some people claim bead blasting is not a good way to remove corrosion, as it "embeds" the corrosion deep into the pores of the circuit board, making it impossible to remove at a chemical level. This may be true, but many commercial board repair establishments use this technique to remove corrosion (probably because corrosion can be removed quickly, with a very professional "look", using bead blasting). Most individuals don't have the means to bead blast, so it's not worth arguing this point here. But please keep this in mind.
Tailgunner:
Just thought I'd point out media blasting equipment ranges from huge pressure pot setups used to expose the aggregate in concrete to airbrush sized units used to etch glass. Blasting media likewise ranges from very course to extremely fine powder. By varying the air pressure and media used, you can clean a lot of things you'd never expect to survive being blasted.
brandon:
--- Quote from: Tailgunner on March 12, 2005, 09:13:07 pm ---Just thought I'd point out media blasting equipment ranges from huge pressure pot setups used to expose the aggregate in concrete to airbrush sized units used to etch glass. Blasting media likewise ranges from very course to extremely fine powder. By varying the air pressure and media used, you can clean a lot of things you'd never expect to survive being blasted.
--- End quote ---
yeah.. I've seen people blast the paint off an aluminum soda can.. that's pretty delicate. I would say its not as harsh as it sounds. I suppose the folks at TwoBit know what they are doing.. I've never heard anything bad about them.
Mooshoo111:
I have a sandblaster to etch in glass. You can take paint off things and not even harm them.