Q. We made some built-in furniture last spring with Douglas-fir. Now, about six months later, the wood is dripping sap on the carpet. We cleaned the sap off the wood surfaces, but now sap is oozing again. What happened and what can we do?

Q. We have trouble controlling the wood’s moisture content, which means relative humidity, in our storage building and in our shop. Can you talk about how heating air lowers the humidity?

Q. We have trouble controlling the wood’s moisture content, which means relative humidity, in our storage building and in our shop. Can you talk about how heating air lowers the humidity?

Q. We have trouble controlling the wood’s moisture content, which means relative humidity, in our storage building and in our shop. Can you talk about how heating air lowers the humidity?

Q. We have trouble controlling the wood’s moisture content, which means relative humidity, in our storage building and in our shop. Can you talk about how heating air lowers the humidity?

Q. We have trouble controlling the wood’s moisture content, which means relative humidity, in our storage building and in our shop. Can you talk about how heating air lowers the humidity?

Q. We have trouble controlling the wood’s moisture content, which means relative humidity, in our storage building and in our shop. Can you talk about how heating air lowers the humidity?

Q. We have trouble controlling the wood’s moisture content, which means relative humidity, in our storage building and in our shop. Can you talk about how heating air lowers the humidity?

Q. When we nail near the end of a piece, or nail or screw in the side edge, we often see a small split created by the fastener. Why is this and what can we do? With MDF, the fastener in an edge seems to create a bump in the surface of the board and also create a separation in the wood around the fastener.

Q. When we nail near the end of a piece, or nail or screw in the side edge, we often see a small split created by the fastener. Why is this and what can we do? With MDF, the fastener in an edge seems to create a bump in the surface of the board and also create a separation in the wood around the fastener.