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Best way to clean deep holes?

Ni200

Plastic
Joined
Feb 27, 2022
Drilled some .070 holes 2in deep into Copper 101, and the engineers have come back with issues of debris/coolant at the bottom of the holes. They are having issues finding a degreaser that'll work well with copper. Do you guys have any recommendations for some product that would help?
 

DDoug

Diamond
Joined
Oct 18, 2005
Location
NW Pa
Need to make a modified blow gun with some small tubing to get air & solvent mix down there, with room on the sides for the "Debris" to escape up & out.
 

Conrad Hoffman

Titanium
Joined
May 10, 2009
Location
Canandaigua, NY, USA
Ultrasonic cleaner won't help you with small deep holes. Second the needle and syringe idea. For tapped holes we've been known to grind a tiny hook on the end of a small rod and go fishing with that. When cleaning anything, identify the enemy. What solvents remove whatever coolant you're using? Alcohol is great for some things, worthless for others. Or, go aqueous with something like Alconox. Regardless, you'll have to do a lot of flushing and rinsing, then you have to get it dry.
 

DDoug

Diamond
Joined
Oct 18, 2005
Location
NW Pa

MaxPrairie

Hot Rolled
Joined
Jul 9, 2015
If it's coolant you are trying to get rid of, hot/warm water and Dawn dish soap seem to do a good job.

Disclaimer: I have no affiliation with Dawn brands.
 








 
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