What can one say about a wood biscuit? The Porter-Cable tool to use them is outstanding and very efficient. Sometimes a biscuit is a little bit oversize and has to be tapped into the cut-out. Stand back because glue will spurt everywhere if you happen to tap it too hard. The biscuit process is very good for joining boards to create a large surface but other joining methods such as special router cuts may be best for fine furniture. I have built common furniture with them and used them in areas that have shearing stress. They have held well and have not failed.