Magnetic finisher

Greetings Delightful Orchidians, I know this must have been discussed
(I searched the archives and couldn’t find it).

I just got a magnetic finisher and am very happy with it. What is the
burnishing compound that you buy with it? I am sure there must be an
equivalent that we can buy in quantity at the hardware store for a
fraction of the price (my buddy Noah recommended TSP). I imagine I
can substitute a good quality dish soap for the liquid soap that
comes with the unit… Thanks! Kate Wolf
http://www.katewolfdesigns.com