[Rog246]

Originally Posted by Mrs flatchat

Suttons have what you need --they have boxed sets that include tapping drill , tap and clearence drill --imperial or metric.
Rocol tapping compound is best alround
Cast iron -dry
Aluminium -kero or Rocol
Stainless steel - Gee (unsalted butter) or Rocol
Steels - soluble oil or Rocol

http://www.sutton.com.au/Assets/1420...edtapdrill.pdf
rocol.com.au - RTD Liquid

Aluminium -kero or Rocol or Soap!
Stainless steel - Gee (unsalted butter) or Rocol or soap !
Rog