Why go to all that bother when this little thingy does the job very adequately, it can even take a few different sized very small taps as well. Make sure that you get one of them that has 4 jaws to grip the taps correctly. It even has a swivel on the top, so you can hold it with one finger to keep it upright, this stops the tap from trying to start at crazy angles and breaking the very small taps. :-)


https://www.ebay.com.au/itm/16469394...QAAOSwsxxgImuN