We have a recommended turning speed of 1500 - 2000 RPM on the IRWIN Speedbor wood boring bits, never exceed 2500 RPM. A good rule of thumb to follow on any drilling tool is the larger the bit the slower the speed. I'd recommend the 1/4" at a max 2000 RPM and slow the speed gradually as you move up to the 1-1/2" size.
Articles in this section
- What is the process for sending an invention or idea to someone for consideration?
- What does the 'Bi-Metal' mean when referring to a utility blade?
- IRWIN Taps & Dies information:
- When would I use a tap and die set and how would I properly use them?
- When would I use a tap and die set and how would I properly use them?
- I was trying to tap a hole in aluminum with a 1/4" tap. Half of the tap broke off in the workpiece. How do I get it out?
- How do you support or validate the "3x Durability" Claim?
- Why is there a slot in the front of the end hook?
- Why the Optic-White(TM) blade color?
- What is the Diamond symbol every 19'-2" increment?
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