This tip will help you drive in a dowel without any problems.
Have you ever had trouble driving a dowel into its hole? Quite often air and glue inside the hole can prevent the dowel from sliding in easily. To prevent this resistance you can cut a slit into the side of the dowel. This will give the air and glue a channel to escape the hole.
Use a bandsaw to cut the groove in the dowel. For safety, be sure to use a clamp to hold the dowel when you cut the groove.