Some approximate starting advice is to set the spindle speed between 700 1000 rpms for steel above 2000 for aluminum and slow down from there if you get discolored chips or heavy drill bit wearin most cases the drill press will not be able to supply enough power or speed to follow the below recommendations. The worlds first smart drill press combines the best features of drill presses with state of the art technology to make your project work more efficient fun and safer. Fastener Tech Sheet Tapping Drill Sizes Model 5dff5 Jet jdp 20 mf drill press. Drill press speed chart metal . How to choose the right drill speed. If you dont take care of your machine it can eventually develop damaging rust on the table run out and wobble with the quill and spindle which drives the chuck of the drill press and moreby checking a few key areas periodically you can keep your unit running smoothly and. The bits have an extremely fast cutting tool geometry. ...