Metal-to-wood ratio is an important aspect of metal refining. The ratio can vary from 0% to 100% which is the reason it's important to know what your metal-to-wood ratio should be. This will help you gauge the quality of your metal, especially if you want to sell it at a higher price
The metal-to-wood ratio is all about your equipment, how well you work with the metal, etc. The richer in ores that your equipment is, the more accurate your results will be and vice versa for a poor quality machine
If you're an amateur or hobbyist, keep in mind that you can't compare yourself with professionals who have invested in equipment that can do high quality work.
ark refining forge wood to metal ratio