Every year I hope to have extra wax for candles and such. However I end up using all of it adding extra wax to the foundation for the benefit of the bees. The extra wax entices the bees to build their comb as well as encourages them to build it uniformly within the confines of the frame.
On the right are 15 sheets of unwaxed plastic foundation. In the middle, 15 sheets factory waxed. On the left , 15 home waxed using a minimal amount of wax but covering all cells. But regardless of the amount of wax, the aroma difference of the home waxed far exceeds the factory wax. So fragrant the bees were landing on me to investigate while I coated the foundation today.