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In order to take apart your flute, gently unscrew the head-joint and foot-joint from the body of the flute. This should be done carefully. Be sure not to touch the keys or keypads because these can easily be damaged. Before you put away and store your flute, it is important that you remove the moisture from inside. If left uncleaned, your flute will not only begin to smell, but it will also tarnish on the inside. As a result, you should clean the inside and outside of your flute after every use. Thread a soft cloth through the needle-like slot in the end of your cleaning rod. Pull the cloth through the slot so that half of the cloth is on either side of the rod. Use a cloth made from a soft and thin material, such as a microfiber or cotton. Take the cloth and wrap it around the rod so that none of the rod is exposed. If the rod touches the flute while cleaning, it can scratch and damage the inside of the flute. Remove the moisture that builds up inside the flute, by gently inserting the cleaning rod into each section of the flute. For example, you will need to clean inside the head-joint, foot-joint, and body of the flute. The cloth will absorb and remove any moisture inside. When cleaning the body section of the flute, be sure to insert the cleaning rod into both ends of the flute. This will ensure that the entire inside is cleaned. You can gently twist the cleaning rod while it is inside the flute to ensure that all the moisture is absorbed. Carefully polish the flute with a microfiber cleaning cloth. While playing, grease and fingerprints can build up on the outside of the flute. Gently clean all of the keys and the body of the flute.  Pay particular attention to the ends (or tenons) where the separate pieces attach together. This is where gunk can often build up. Use your fingers and a cloth to clean around and inside the ends. Do not use cloths that contain metal polish. These can damage your flute and should be avoided. When you are cleaning, be sure to hold the flute by the barrel and avoid touching the key pads. These can be easily punctured and will cause damage to your flute. You can also bend the keys if you are too rough while cleaning. If the key pads or keys are damaged, take your flute to a professional for servicing and repair. You can use a cotton swab to remove dust and buildup between the keys. A cotton swab can also be used to clean the embouchure hole on the head-joint. Be very gentle and avoid touching the keypads.

Summary:
Unscrew the pieces gently. Clean your flute after each use. Attach a cloth to the cleaning rod. Wrap the cloth around the rod. Insert the rod into each section of the flute. Twist the rod to clean inside. Wipe the outside of the flute with a cloth. Don’t touch the key pads while cleaning. Use a cotton swab to clean tough to reach places.