To be a common rule, slower speeds are recommended for greater diameter bits and hardwoods, whilst faster speeds do the job perfectly with more compact diameter bits and softer woods. It is always encouraged to refer to the manufacturer’s recommendations for certain guidance on drilling speeds. A High-Pace Metal (HSS) https://twist-drill-bits72503.answerblogs.com/31464841/examine-this-report-on-what-is-twist-bit