Mostly, this applies to softer materials. A lighter and steady stress is adequate. It permits the tooth to chop effectively without the increased possibility of clogging. Well suited for use on aluminium, Forged iron, plastics, steel & wood 35mm highest reducing depth For use using an arbor for chopping 48mm https://marioavsoi.glifeblog.com/34353050/the-2-minute-rule-for-hss-hole-saw