This section is from the book "Mission Furniture: How To Make It", by Henry Haven Windsor. Also available from Amazon: Mission Furniture: How to Make It.
When putting a wax finish on oak or any open-grained wood, the wax will often show white streaks in the pores of the wood. These streaks cannot be removed by rubbing or brushing. Prepared black wax can be purchased, but if you do not have any on hand, ordinary floor wax can be colored black. Melt the floor wax in a can placed in a bucket of hot water. When the wax has become liquid mix thoroughly into it a little drop black or lampblack. Allow the wax to cool and harden. This wax will not streak, but will give a smooth, glossy finish.