Oak is a poor choice of wood for this project.It is easily split during the riveting operation. Most Ace hardware stores sell rivets. the trick it to buy them the correct length for the width of your handle. That sounds easier than it is. Since you are only doing one knife, You are going to use the top or back surface of a bench vise, or anvil, and a hammer to close the rivet. If the rivet is too short, it will be driven down into the wood, and with oak slabs, splitting the slab is a common result. That is why hickory makes a better choice of wood for slabs. Other woods to avoid include the soft woods, as well as ash, and some of the softer " hard " woods. Fruit tree wood makes excellent handles.