Welcome! Here are the website rules, as well as some tips for using this forum.
Need to contact us? Visit https://heatinghelp.com/contact-us/.
Click here to Find a Contractor in your area.

Tapping a radiator

in moving all my radiator vents to the lower position on the radiator, I realized most of my radiators just have a dimple where the vent is supposed to go.  I have a 1/8 tap, size R bit, cutting oil, variable speed drill.  What do I need to know?