Although there is no 100% guarantee to avoid cracking in composite wood clarinet, the following measures can also effectively reduce the chance of composite wood clarinet cracking:

In the first week of using the new composite wood clarinet, the playing time should not exceed 15 minutes per day; in the second week, it is recommended to play once in the morning and evening for 15 minutes each time; then gradually increase the playing time. This process can be seen as a break-in period for a new clarinet.

In winter, when the temperature is cold and the air is dry, it is not suitable to run in the new composite wood clarinet.

 Generally speaking, do not put moisture-proof agent in composite wood clarinet musical instrument box, and even some foreign experts suggest that some humidification treatment is needed in extremely dry areas/seasons.

After each performance of composite wood clarinet, be sure to use a tube cloth to wipe off the moisture in the tube, and pay special attention to using absorbent paper to absorb the water remaining in the key system.
 
Even a well-worn composite wood clarinet should not be left without blowing for a long time. It is recommended to take it out and play it at least every few days, also to ensure the performance of the clarinet.

Prevent composite wood clarinet from being exposed to drastic temperature changes. For example, bringing composite wood clarinet from the cold outside to a well-heated room in winter and storing composite wood clarinet in a sunlit car (even in a musical instrument case) in summer can be quite dangerous.

Through the above introduction and analysis of composite wood clarinet, hope it helps you.