Originally Posted by Fishhook
Only try to cut about 1/4 turn each time before you back the tap and clear the chips. Use plenty of oil, your taps should last for yrs. Also be sure to start with the proper size hole. Auto parts stores usually have some taps on hand..
Most definitely a good tip. When I chased the factory thread with the HF tap lubricated I could only get around 1/16 turn before backing it out. If I had gone farther I am sure I would have snapped it.