- Joined
- Jun 26, 2014
- Messages
- 619
Tried some taps, some in sulfuric acid (battery acid from the auto store) and some in hydrocloric acid (30% pool acid).
An hour in the sulfuric acid worked nicely. Noticeable sharper, no noticeable change in size with the mic, and a nice blackened finish which came off with a bit of work with the wire brush on the dermal tool (but I didn't bother on most of them)
Hydrocloric acid was much slower, cleaned them up nicely but only felt marginally sharper - left some overnight but may of needed a day or so to get the same effect as the sulfuric acid.
Havent tried using them - but to my untrained thumb they feel noticeably sharper so I would say a success.
After taking them out of the acid I just rinced them in a water/bicarbonate soda solution to neutralize any other left over acid then dried them and coated them with WD40 (equivalent) and left them to air dry.
An hour in the sulfuric acid worked nicely. Noticeable sharper, no noticeable change in size with the mic, and a nice blackened finish which came off with a bit of work with the wire brush on the dermal tool (but I didn't bother on most of them)
Hydrocloric acid was much slower, cleaned them up nicely but only felt marginally sharper - left some overnight but may of needed a day or so to get the same effect as the sulfuric acid.
Havent tried using them - but to my untrained thumb they feel noticeably sharper so I would say a success.
After taking them out of the acid I just rinced them in a water/bicarbonate soda solution to neutralize any other left over acid then dried them and coated them with WD40 (equivalent) and left them to air dry.