Finding the best biscuit joiner can be confusing and can cost a lot of money if bought the wrong one. See our biscuit joiner reviews to find the suitable one for you. Why buy a biscuit joiner? Biscuit Joiner is a very handy tool for home improvement and projects like making a coffee table where it is necessary to join multiple boards together. Sticking glue or nail does not give a strong join like a biscuit joiner. Also, sometimes it is not possible to give a smoother or professional finish without biscuit joiner.