From: Jeffrey S. Sharp <jss(a)subatomix.com> I supect local naming conventions for Isopropanol Alcohol. Methanol is to be avoided, very flamable. Yes. Yes!!! Glues vary is solvency and solvents used so any one can be problmatic. MOST ALL are FLAMABLE. Many of the older (gray silicon plastic packages) are more liable to damage by agressive solvents. Water is the safest, generally. ....... Should not if done with care. NO! the pressure could beak those fragile wires. Likely ok, with great care to avoid putting mechanical forces on the core wires. NO.. NO, NOOOOOOOO! canned air can be high pressure and Blowdryer is a risk for FIRE. Isopropanol is flammable and both the motor(brushes) and the heater are risk for sparks. Cleaning core is difficult due to the great fragility and the problem that the solder points for the wires can be weaker than the wire due to corrosion {possible environmental} and the stripping methods that may have been used to remove the insulating coating. More often than not the actual core mat is a cleaner location with plastic covers and the like. The latter suggests disassembly of the core stack to observe the condition and cleanliness as compared to the external boards (drivers and sense amps). Use care. Allison