General Contractor FAQ
What is the recommended bit speed for flat bits? I am sure that the speed varies by bit diameter and wood species
We have a recommended turning speed of 1500 - 2000 RPM on the IRWIN Speedbo... read more
What will remove the permanent staining chalk?
The chalk is permanent staining and we do not guarantee that anything will ... read more
How do I change the batteries?
Remove the set screws on the top of the unit using the small hex key. Chang... read more